Processsuite; I|Ware Pc - Siemens Moore 353 User Manual

Data Mapping
Modbus Driver
MYCROADVANTAGE provides a Modbus driver for communicating with up to 32 stations through a single COM
port. There are a few considerations when communicating with a Model 352P, 353 or 354 using the Modbus driver.
•
Loop data is available as integer or floating point. When integer is used, more data is obtained with a single
command, thus improving the communication throughput. When integer data is used, ranges can be scaled
using 3:Linear function MX+B scaling.
•
The MODBUS.DAT file must be modified. Under the section [Address Chunk Range], set "UseDefault=0",
under section [Address Size], set "itChunkSize=48" and "WordChunkSize=60".

7.1.3 ProcessSuite

RealTime LIL I/O Server
An optional LIL RealTime I/O Server is available to communicate with the Model 320 ICI (Independent Computer
Interface). The 320 communicates over the Local Instrument Link (LIL) with other stations that have the LIL
option boards installed. Refer to the literature provided with the LIL RealTime I/O Server for proper operation.
Optimize LIL performance by using Global Data, especially for data that is updated on each scan such as the
process, setpoint, valve, loop status, and alarm I. Use individual parameter requests only to obtain data not required
frequently (e.g. tuning parameters, range scaling).
Modbus I/O Server
A Modbus I/O Server comes with Process Suite and it can be used to communicate with the controller. Refer to the
Modbus I/O Server instructions for operating details. Certain parameter settings are critical. In the Topic
Definition, use the 584/984 slave type. Set the maximum coil reads to 48 and maximum register reads to 60.
Maximum coil writes can be set to the minimum allowed value of 8 and register writes to 2.

7.1.4 i|ware PC

Modbus OPC Server
The i|ware PC Operator Interface software includes a Modbus OPC server that when connected to the controller can
auto populate its database with the number and type of loops configured in the station. All tag names used in the
OPC database will be the same as listed in this manual.
LIL OPC Server
The i|ware PC Operator Interface software includes an LIL OPC server that when connected to the controller can
auto populate its database with the number and type of loops configured in the station. All tag names used in the
LIL OPC database will be the same as listed in this manual.
Ethernet OPC Server
The i|ware PC Operator Interface software is an OPC Client and can be connected to an OPC server. An Ethernet
OPC server using the Open Modbus/TCP Protocol is available to obtain data from single or multiple controllers and
server the data to OPC clients.
Modbus Application Note: Refer to application document AD353-108 for information on using Modbus
communications with controller products.
7-2
UM353-1
March 2003