Table of Contents
Advertisement
(S) means the parameter is effective, when Modbus Type of GW-7553-B /
GW-7553-M is Slave.
(T) means the parameter is effective, when Modbus Format of GW-7553-B /
GW-7553-M is TCP.
4.4 The Configuration of the modules
The user can set the number and size of the I/O modules in the PROFIBUS
configuration tool. The settings of the modules are described below.
Max. I/O modules：32 modules
●
System setting module：3 byte output , 6byte input
●
Output module：Output Relay/Coil => 1~32 Bytes
●
Input module：Input Relay/Coil => 1~32 Bytes
●
Max. length of I/O data：480 Bytes
●
Output length：0~240 Bytes
●
Input length：0~240 Bytes
●
Note:
The user must add "System setting module" at the first module before the other
modules, else the GW-7553-B / GW-7553-M will send the diagnostic messages
to PROFIBUS Master and the system will be abnormal.
The modules have module parameters about the communication settings. The
module parameters are shown in the below：
A. Output Relay/Coil module parameters：
Modbus Slave Device ID(M)：0~247
●
Start Address(M)：0~65535
●
NO. of Relay/Coil(M)：8*(n-1)+1 ~ 8*n Bits
●
n=Module size/Byte
TCP_Connect_Index(T)(M)：1~8
●
B. Output Register module parameters：
Modbus Slave Device ID (M)：0~247
●
Start Address(M)：0~65535
●
Change Word Order：Enable/Disable (Even module only)
●
TCP_Connect_Index(T)(M)：1~8
●
GW-7553-B / GW-7553-M PROFIBUS/Modbus TCP Gateway User Manual (Version 1.35, May/2017)
PAGE: 38
Output Register
Input Register
=> 1~64 Words
=> 1~64 Words
Advertisement
Table of Contents
