FieldServer Computer Drive FS 8704 13 User Manual

A Sierra Monitor Company  
Driver Manual  
(Supplement to the FieldServer Instruction Manual)  
FS-8704-13 GE-SRTP Ethernet Driver  
APPLICABILITY & EFFECTIVITY  
Effective for all systems manufactured after January 1, 1999  
Instruction Manual Part Number FS-8704-13  
Version 1.00  
Revision 1.a  
9/26/2002  
 
FS -8704-13 GE-SRTP  
Driver Manual  
1. GE-SRTP Driver Description  
The GE-SRTP driver allows the FieldServer to transfer data to and from devices over Ethernet  
using GE-SRTP Driver protocol. There are two Ethernet ports standard on the FieldServer. The  
FieldServer can emulate either a Server or Client.  
The GE-SRTP driver is capable of read & writing the data tables of a GE series 90 PLC which is  
equipped with an Ethernet port.  
The driver is capable of exposing its communication statistics so that they can be monitored by a  
downstream device.  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 (408) 262-2299 fax: (408) 262-9042  
E-mail: support@fieldserver.com  
Page 1  
 
FS -8704-13 GE-SRTP  
Driver Manual  
2. Driver Scope of Supply  
2.1 Supplied by FieldServer Technologies for this driver  
UTP cable (7 foot) for Ethernet connection  
UTP cable (7 foot) for RS232 use  
RJ45 to DB9F connector adapter  
RJ45 to DB25M connection adapter  
RS485 connection adapter  
Driver Manual.  
2.2 Provided by user  
GE-SRTP System.  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 (408) 262-2299 fax: (408) 262-9042  
E-mail: support@fieldserver.com  
Page 2  
 
FS -8704-13 GE-SRTP  
Driver Manual  
3. Hardware Connections  
Make sure the device IP_address is configured to be on the same IP network as on the  
FieldServer. Use a crossover cable if the FieldServer is connected directly to the PLC  
device. Use a straight cable if the FieldServer is connected to a hub.  
ETHERNET CPU  
A
CPU  
364  
1
2
P1 P2  
P3  
P4 P5  
P6  
P7  
P8  
R1  
R2  
N1 N2  
RS485  
10 Base T  
ETHERNET  
RS232  
P1  
T
P2  
P3  
P4  
P5  
P6  
P7  
P8  
Rx Tx  
R1  
Rx Tx  
R2  
Net  
1
Net  
2
Rx  
x
Rx Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx  
T
x
Rx  
T
x
Tx Rx Con  
Tx Rx Con  
Options:  
1
2
RJ45  
Transceiver AAUI to 10base-T  
NON-ETHERNET CPU  
B
CCM  
321  
CPU  
2
UNDERNEATH  
(408)-262-2299  
P1  
P2  
P3  
P4  
P5  
P6  
P7  
P8  
R1  
R2  
N1 N2  
RS485  
10 Base T  
ETHERNET  
RS232  
GE-SRTP  
CONNECTION DIAGRAM  
P1  
Rx Tx  
P2  
Rx  
P3  
P4  
P5  
P6  
P7  
P8  
R1  
Rx Tx  
R2  
Rx Tx  
Net Net2  
1
T
x
Rx Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx  
T
x
T
x
Rx Con Tx Rx Con  
BASE NAME:  
FILE NAME: FS-T28704-13 .VSD  
DATE: 12/7/01  
BY: MN  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 (408) 262-2299 fax: (408) 262-9042  
E-mail: support@fieldserver.com  
Page 3  
 
FS -8704-13 GE-SRTP  
Driver Manual  
4. Configuring the FieldServer as a GE-SRTP Driver Client  
For a detailed discussion on FieldServer configuration, please refer to the instruction manual for the  
FieldServer. The information that follows describes how to expand upon the factory defaults  
provided in the configuration files included with the FieldServer (See “.csv” files on the driver  
diskette).  
This section documents and describes the parameters necessary for configuring the FieldServer to  
communicate with a GE-SRTP Driver Server.  
The configuration file tells the FieldServer about its interfaces, and the routing of data required. In  
order to enable the FieldServer for GE-SRTP Driver communications, the driver independent  
FieldServer buffers need to be declared in the “Data Arrays” section, the destination device  
addresses need to be declared in the “Client Side Nodes” section, and the data required from the  
servers needs to be mapped in the “Client Side Map Descriptors” section. Details on how to do this  
can be found below.  
Note that in the tables, * indicates an optional parameter, with the bold legal value being the  
default.  
4.1 Data Arrays  
Section Title  
Data_Arrays  
Column Title  
Data_Array_Name  
Function  
Provide name for Data Array  
Legal Values  
Up to 15 alphanumeric  
characters  
Data_Format  
Provide data format. Each data array can only FLOAT, BIT, UInt16, SInt16,  
take on one format.  
Packed_Bit, Byte,  
Packed_Byte, Swapped_Byte  
Data_Array_Length  
Number of Data Objects. Must be larger than 1-10,000  
the data storage area required for the data  
being placed in this array.  
Example  
//  
Data Arrays  
Data_Arrays  
Data_Array_Name,  
DA_AI_01,  
DA_AO_01,  
DA_DI_01,  
Data_Format,  
UInt16,  
UInt16,  
Byte,  
Data_Array_Length  
200  
200  
200  
200  
DA_DO_01,  
Byte,  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 (408) 262-2299 fax: (408) 262-9042  
E-mail: support@fieldserver.com  
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FS -8704-13 GE-SRTP  
Driver Manual  
4.2 Client Side Connections  
Section Title  
Adapter  
Column Title  
Adapter  
Function  
Legal Values  
Specify which port the device is N1  
connected to the FieldServer  
Protocol  
Specify protocol used  
GE_SRTP, SRTP  
Example  
//  
Client Side Connections  
Connections  
Adapter, Protocol  
N1,  
SRTP  
4.3 Client Side Nodes  
Section Title  
Nodes  
Column Title  
Node_Name  
Function  
Provide name for node  
Legal Values  
Up to 32 alphanumeric  
characters  
Node_ID  
Node ID of physical server node  
(PLC)  
1-255  
IP_Address  
IP address of physical server node Must be on the same subnet as  
(PLC)  
the server or gateway  
Protocol  
Adapter  
Specify protocol used  
Specify on which port the device is N1  
connected to the FieldServer  
GE_SRTP, SRTP  
Example  
//  
Client Side Nodes  
Nodes  
Node_Name, Protocol, IP_Address,  
Adapter  
Node_A, SRTP, 192.168.1.174, N1  
4.4 Client Side Map Descriptors  
4.4.1 FieldServer Specific Map Descriptor Parameters  
Column Title  
Map_Descriptor_Name  
Data_Array_Name  
Function  
Legal Values  
Name of this Map Descriptor  
Name of Data Array where data is  
to be stored in the FieldServer  
Starting location in Data Array  
Up to 32 alphanumeric characters  
One of the Data Array names from  
“Data Array” section above  
0 to maximum specified in “Data  
Array” section above  
Data_Array_Location  
Function  
Function of Client Map Descriptor RDBC, WRBC, WRBX  
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E-mail: support@fieldserver.com  
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Driver Manual  
4.4.2 Driver Specific Map Descriptor Parameters  
Column  
Title  
Function  
Legal Values  
Node_Name Name of Node to fetch data from  
One of the node names specified in  
“Client Node Descriptor” above  
Discrete Inputs (%I)  
Data_Type  
Data type  
Discrete Outputs (%Q)  
Discrete Temporaries (%T)  
Discrete Internals (%M)  
Genius Global Data (%G)  
Analog Inputs (%AI)  
Analog Outputs (%AQ)  
Registers (%R)  
Use one of the Data Types specified in brackets.  
%SA Dis crete  
%SB Discrete  
%SC Discrete  
%S Discrete (%S)  
1 - 1000  
Length  
Length of Map Descriptor  
Ensure that the length does not exceed the table length  
in the PLC.  
Address  
Starting address of read block / write block  
1 , 2 , 3  
Positive whole numbers  
The 1st element of each Data type Table is referred to  
as address one.  
Format  
Use to override the default format for obtaining data.  
Bit tables are by default read by reading whole bytes  
Bit, Byte  
at a time (If the Length is 10 then 10 bytes of data are The format for %AI,%AQ and %R  
read and placed in 10 data array locations)  
cannot be changed.  
If you wish to read bits instead then use this parameter  
. (If the Length is 10 then 10 bits are read and each bit  
is stored in its own location.)  
4.4.3 Timing Parameters  
Column Title  
Function  
Legal Values  
Scan_Interval  
Rate at which data is polled  
>0.1s  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 (408) 262-2299 fax: (408) 262-9042  
E-mail: support@fieldserver.com  
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FS -8704-13 GE-SRTP  
Driver Manual  
4.4.4 Map Descriptor Example 1 – Simple Read.  
This example provides a map descriptor to read 10 bytes of Discrete Input states, starting at the very first Discrete Input. The data is stored in a data array  
called DA_DI and the first input is stored at location 100 in the array (101st element). The PLC is polled every 2 seconds  
Map_Descriptor_Name, Data_Array_Name, Data_Array_Offset, Function, Scan_Interval, node_name, Address, Length, Data_Type  
CMD_AI_01  
, DA_AI_01  
, 0  
, rdbc , 1.0s  
, Node_A  
, 1  
, 10  
, %AI  
Map descriptor  
names may be  
used in driver  
error messages. It  
is not essential,  
but it is useful to  
Location in the data  
array at which the first  
element of data will be  
stored. The arrays are  
zero referenced so an  
offset of 100 indicates  
the 101st element of  
the array.  
Read will be  
performed  
every 2.0  
The address and length  
specify the first  
element and the  
number of elements  
that must be read from  
the PLC’s data tables.  
Data Type. Use the  
% symbol as you  
would if you were  
programming a GE  
PLC.  
Seconds.  
The node must have  
been defined  
previously in the  
Nodes section of the  
CSV file.  
use unique names.  
GE PLC’s reference  
data tables starting at  
element 1.  
The name of the  
data array in  
RDBC =  
Read Block  
Continuous.  
The node name  
connects this map  
descriptor to a node  
which in turn  
connects the map  
descriptor to a port.  
Unless otherwise  
specified the driver  
reads bytes and words.  
This map descriptor  
reads 10 bytes of data  
– covering %I1 to  
%I79.  
which the driver  
will store the data.  
The name must  
correspond to a  
data array defined  
in the data array  
section of the  
The driver  
will read data  
from the PLC  
continuously.  
CSV file.  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 (408) 262-2299 fax: (408) 262-9042  
E-mail: support@fieldserver.com  
Page 7  
 
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Driver Manual  
4.4.5 Map Descriptor Example 2 – Simple Write  
This example writes data from the Fieldserver data array called DA_AO to the PLC identified as NODE1. The write is repeated every 5 seconds. Ten word  
values are written to the PLC’s %AQ Data Table starting at location 20.  
Map_Descriptor_Name, Data_Array_Name, Data_Array_Offset, Function, Scan_Interval, node_name, Address, Length, Data_Type  
Write_AO  
, DA_AO  
, 0  
, wrbc , 5.0s  
, Node1 , 20  
, 10  
, %AQ  
Write  
continuously  
Write to PLC  
Write to the %AQ  
(Analog Output)  
table in the PLC.  
Table element  
number 20 to 29  
inclusive (10  
elements)  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 (408) 262-2299 fax: (408) 262-9042  
E-mail: support@fieldserver.com  
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Driver Manual  
4.4.6 Map Descriptor Example 3 – Handling Bits.  
This example shows how to read 1 couple of bits from a data table rather than reading a whole byte. The bits can cross byte boundaries. Here we read 2 bits  
from table %T starting at bit 8. This is most useful when writing to the PLC in cases where you want to turn one particular bit on or off.  
Map_Descriptor_Name, Data_Array_Name, Data_Array_Offset, Function, Scan_Interval, node_name, Address, Length, Data_Type, Format  
Read_DI  
, DA_T  
, 100  
, rdbc  
, 2.0s  
, PLC-1  
, 8  
, 2  
, %T  
, Bit  
The format parameter tells the  
driver to override the default data  
type and to specifically read bits. In  
this case the bit states are stored in  
the data array in two separate  
elements at DA_T[100] and  
DA_T[101]  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 (408) 262-2299 fax: (408) 262-9042  
E-mail: support@fieldserver.com  
Page 9  
 
FS -8704-13 GE-SRTP  
Driver Manual  
5. Configuring the FieldServer as a GE-SRTP Driver Server  
For a detailed discussion on FieldServer configuration, please refer to the instruction manual for the  
FieldServer. The information that follows describes how to expand upon the factory defaults  
provided in the configuration files included with the FieldServer (See “.csv” files on the driver  
diskette).  
This section documents and describes the parameters necessary for configuring the FieldServer to  
communicate with a GE-SRTP Driver Client  
The configuration file tells the FieldServer about its interfaces, and the routing of data required. In  
order to enable the FieldServer for GE-SRTP Driver communications, the driver independent  
FieldServer buffers need to be declared in the “Data Arrays” section, the FieldServer virtual node(s)  
needs to be declared in the “Server Side Nodes” section, and the data to be provided to the clients  
needs to be mapped in the “Server Side Map Descriptors” section. Details on how to do this can be  
found below.  
Note that in the tables, * indicates an optional parameter, with the bold legal value being the  
default.  
5.1 Data Arrays  
Section Title  
Data_Arrays  
Column Title  
Data_Array_Name  
Function  
Provide name for Data Array  
Legal Values  
Up to 15 alphanumeric  
characters  
Data_Format  
Provide data format. Each data array can only FLOAT, BIT, UInt16, SInt16,  
take on one format.  
Packed_Bit, Byte,  
Packed_Byte, Swapped_Byte  
Data_Array_Length  
Number of Data Objects. Must be larger than 1-10,000  
the data storage area required for the data  
being placed in this array.  
Example  
//  
Data Arrays  
Data_Arrays  
Data_Array_Name,  
DA_AI_01,  
DA_AO_01,  
DA_DI_01,  
Data_Format,  
UInt16,  
UInt16,  
Byte,  
Data_Array_Length  
200  
200  
200  
200  
DA_DO_01,  
Byte,  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 (408) 262-2299 fax: (408) 262-9042  
E-mail: support@fieldserver.com  
Page 10  
 
FS -8704-13 GE-SRTP  
Driver Manual  
5.2 Server Side Connections  
Section Title  
Adapter  
Column Title  
Adapter  
Function  
Legal Values  
Specify which port the device is N1  
connected to the FieldServer  
Protocol  
Specify protocol used  
GE_SRTP, SRTP  
Example  
//  
Server Side Connections  
Connections  
Adapter, Protocol  
N1,  
SRTP  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 (408) 262-2299 fax: (408) 262-9042  
E-mail: support@fieldserver.com  
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5.3 Server Side Nodes  
Section Title  
Nodes  
Column Title  
Node_Name  
Function  
Provide name for node  
Legal Values  
Up to 32 alphanumeric  
characters  
Node_ID  
Node ID of physical server  
node  
1-255  
Protocol  
Specify protocol used  
SRTP  
Example  
//  
Server Side Nodes  
Nodes  
Node_Name, Node_ID, Protocol,  
GE_Srv_11, 11,  
SRTP ,  
5.4 Server Side Map Descriptors  
5.4.1 FieldServer Specific Map Descriptor Parameters  
Column Title  
Map_Descriptor_Name  
Data_Array_Name  
Function  
Legal Values  
Name of this Map Descriptor  
Name of Data Array where data is  
to be stored in the FieldServer  
Starting location in Data Array  
Up to 32 alphanumeric characters  
One of the Data Array names from  
“Data Array” section above  
0 to maximum specified in “Data  
Array” section above  
Data_Array_Location  
Function  
Function of Server Map Descriptor Passive  
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E-mail: support@fieldserver.com  
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Driver Manual  
5.4.2 Driver Specific Map Descriptor Parameters  
Column Title  
Data_Type  
Function  
Legal Values  
Discrete Inputs (%I)  
Data type  
Discrete Outputs (%Q)  
Discrete Temporaries (%T)  
Discrete Internals (%M)  
Genius Global Data (%G)  
Analog Inputs (%AI)  
Analog Outputs (%AQ)  
Registers (%R)  
Use one of the Data Types  
specified in brackets.  
%SA Discrete  
%SB Discrete  
%SC Discrete  
%S Discrete (%S)  
1 - 1000  
Length  
Length of Map Descriptor  
Ensure that the length does not  
exceed the table length in the PLC.  
Starting address of read block /  
write block  
Address  
1 , 2 , 3  
Positive whole numbers  
The 1st element of each Data type  
Table is referred to as address one.  
Format  
Has no meaning on the server as  
the driver responds based on the  
nature of the request  
N/A  
The map descriptors should be  
considered to be the definitions of  
data tables in a PLC. Thus one map  
descriptor can be used to respond  
to bit or byte requests.  
5.4.3 Timing Parameters  
Column Title  
Function  
Legal Values  
Scada_Hold_Timeout  
Specifies time server side waits  
before responding to client that  
node is offline on FieldServer  
client side.  
>1.0s  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 (408) 262-2299 fax: (408) 262-9042  
E-mail: support@fieldserver.com  
Page 13  
 
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Driver Manual  
5.4.4 Map Descriptor Example.  
In this example the FieldServer can respond to polls the request %R data provided that the request is in the range of address indicated below.  
Map_Descriptor_Name, Data_Array_Name, Data_Array_Offset, Function, Node_Name, Address, Length, Data_Type  
Server-R-Data  
, TABLE_R  
, 0  
, passive, PLC1  
, 1  
, 1000 ,%R  
Address 1  
This map descriptor  
can be used to  
respond to poll that  
read and write to  
addresses 1 to 1000.  
This map descriptor  
will be used to  
process client  
read/writes of  
Register (%R) data.  
If the client is  
reading then  
corresponds to  
offset zero (1st  
location) in the  
array.  
This is a server. It  
responds to polls but  
does no active work  
itself.  
response data will  
be obtained from  
this table. If the  
client array writing  
then incoming data  
will be stored in this  
array.  
If client reads %R15  
then driver responds  
with data from  
element 14 of the  
array.  
If a poll attempts to  
read data at address  
1001 then if no  
other map descriptor  
covers that address  
space then a no data  
response will be  
sent.  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 (408) 262-2299 fax: (408) 262-9042  
E-mail: support@fieldserver.com  
Page 14  
 
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6. Driver Notes  
6.1 Driver Stats  
The statistics recorded by the GE-SNPX Serial Driver are slightly different from the way that  
Fieldserver driver normally record statistics. This difference arises from the fact that this driver is  
not a simple poll response driver. Bare in mind that a single poll can generate a large number of  
response fragments.  
Fragment Ack/nack messages are NOT counted as message but the bytes sent/rcvd are counted.  
Connection messages are counted as messages and the bytes sent/rcvd are counted.  
This driver can expose these and additional statistics by writing data to a data array.  
A special map descriptor is required. The driver recognizes the map descriptor by its name which  
must be "SRTP-stats" .  
The following example shows how this special map descriptor can be configured.  
Nodes  
Node_name, Protocol  
null_node, SRTP  
Data_Arrays  
Data_Array_Name, Data_Format, Data_Array_Length  
SRTP_STATS  
, UINT32  
, 600  
Map_blocks  
Map_block_Name, Data_Array_Name, Node_name, Length  
srtp-stats , SRTP _STATS , null_node , 600  
When the driver sees this map descriptor it uses the data array SRTP _STATS (in this example)  
to store driver specific statistics. Only one of these map descriptors may be specified (per tier) per  
FieldServer.  
The driver stores the following stats for each port.. The offset into the data array can be found by  
multiplying the port number by 50  
Stat #  
Stat Code  
1GE_STAT_BAD_SEND  
2GE_STAT_POLL_MSGS_SENT  
3GE_STAT_POLL_BYTES_SENT  
4GE_STAT_SESS_CONNECT  
5GE_STAT_DEV_CONNECT  
6GE_STAT_BAD_PDU  
7GE_STAT_BAD_PROTOCOL  
8GE_STAT_TIMEOUT  
9GE_STAT_MBOX_NAK_MAJOR  
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E-mail: support@fieldserver.com  
Page 15  
 
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10GE_STAT_MBOX_NAK_MINOR  
11GE_STAT_MBOX_NAK_CNT  
12GE_STAT_MBOX_PROG_NUM  
13GE_STAT_MBOX_SWEEP  
14GE_STAT_MBOX_PLC_STAT  
15GE_STAT_MBOX_PRIV_LVL  
16GE_STAT_DEV_CONNECT_RESP  
17GE_STAT_SESS_CONNECT_RESP  
18GE_STAT_SESS_RESPONSE  
19GE_STAT_DEV_RESPONSE  
20GE_STAT_SLAVE_BAD_PDU  
21GE_STAT_SLAVE_SENDS_BAD_MBOX  
22GE_STAT_SLAVE_SENDS_OTHER_NAK  
23GE_STAT_SLAVE_BAD_SERVICE_RQST  
24GE_STAT_ERROR_PDU_RESP_COUNT  
25GE_STAT_ERROR_PDU_RESP_CODE  
26GE_STAT_RESPONSE_MSGS_RECD  
27GE_STAT_RESPONSE_BYTES_RECD  
28GE_STAT_POLL_MSGS_RECD  
29GE_STAT_POLL_BYTES_RECD  
30GE_STAT_RESPONSE_MSGS_SENT  
31GE_STAT_RESPONSE_BYTES_SENT  
6.2 Driver Error messages  
The following messages are produced by the driver and written to the error log which can be viewed using  
the RUInet utility program or logged using the RUIdebug utility program.  
Messages marked with a *, are only printed once and then suppressed to prevent the error log being filled  
with repetitive messages.  
SRTP:#1 FYI. The MapDesc called <%s> is too short.  
You have define a map descriptor to expose driver statistics but the length parameter must be at  
least 500 long. Ensure the Data array is this long too. Edit the CSV, correct he problem and reset  
the Fieldserver.  
SRTP:#2 FYI. You could have used a mapDesc called <%s> to expose diagnostic info.  
You may safely ignore this message. Read section 6.3 for information on how to expose the  
drivers communication statistics using a data array.  
SRTP:#3 Error. MapDesc=<%s> has bad data type.  
You must edit the CSV file, correct the problem and then reset the FieldServer to correct this  
problem. Read the manual to get a list of valid data types.  
SRTP:#4 Err. Address < 1 for MapDesc=<%s>.  
GE references its data elements starting at one. You have a map descriptor with an address less  
than 1. The driver will assume you meant an address of one until you edit the CSV file and reset  
the FieldServer.  
*SRTP:#5 FYI. Capability is non-zero  
This message requires no user action. It is intended for Fieldserver support engineers.  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 (408) 262-2299 fax: (408) 262-9042  
E-mail: support@fieldserver.com  
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*SRTP:#6 FYI. Connect remaining bytes non-zero  
This message requires no user action. It is intended for Fieldserver support engineers.  
*SRTP:#7 Err. Destination request not supported.  
*SRTP:#8 Err. Destination response not supported.  
The driver has received a message that it cannot respond to. The message received is not normally  
associated with reading / writing table memory and can be ignored by this driver. There is no  
corrective action that you can take. If you wish, take a log file using RUIdebug and contact  
Fieldserver support.  
SRTP:#9 Err. Driver des not support unconfirmed messages.  
The driver has been polled using a method which does not require confirmation. The driver does  
not support this method. A panic is produced by this message. There is no corrective action that  
you can take. If you wish, take a log file using RUIdebug and contact Fieldserver support.  
SRTP:#10 Err. Session Mbox bad type. Act/Exp=%x/c0  
SRTP:#11 Err. Session Mbox bad SR code. Act/Exp=%x/4f  
SRTP:#12 Err. Session SR bad param. Act/Exp=%x/01  
If this error occurs repeatedly or frequently then take a log using RUIdebug and contact support. If  
infrequent then it indicate an occasional corrupt message. There is no corrective action you can  
take to eliminate this error.  
SRTP:#13 Err. Cant Process ServiceRQst=%x(h)  
The driver cannot process this service request. It can only read/write table memory. There is no  
corrective action you can take when this message is printed. If you wish, take a log file using  
RUIdebug and contact Fieldserver support. The message is followed by a buffer dump. Recording  
the buffer may be useful to Fieldserver support engineers.  
SRTP:#14 Err. Cant Process Mbox=%x(h)  
The driver cannot process this type of Mailbox message or a valild mailbox message was received  
in an invalid context. If this message occurs frequently, take a log file using RUIdebug and contact  
Fieldserver support. The message is followed by a buffer dump. Recording the buffer may be  
useful to Fieldserver support engineers.  
SRTP:#15 Err. Cant Process PDU=%x(h)  
The driver can only process ‘connect’ and ‘data request’ PDU’s. . There is no corrective action  
you can take when this message is printed. If you wish, take a log file using RUIdebug and contact  
Fieldserver support. The message is followed by a buffer dump. Recording the buffer may be  
useful to Fieldserver support engineers.  
6.3 Scaling  
The driver only supports scaling fro the following data types  
Analog Inputs (%AI)  
Analog Outputs (%AQ)  
Registers (%R)  
The scaling is only applied when the driver acts as a client.  
When using scaling on an active map descriptor which writes data to a PLC ensure that the scaling  
produces a number in the range 0-65536 ( an unsigned short integer).  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 (408) 262-2299 fax: (408) 262-9042  
E-mail: support@fieldserver.com  
Page 17  
 

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