B&B Electronics GW-7552 - Manual - Manual (Page 36)

GW-7552 PROFIBUS/MODBUS GATEWAY User Manual (Version 1.40, Apr/2012) PAGE: 36
In this case, the user can select an “Input Relay/Coil=> 2 Bytes module”, module
parameters are shown in the below:
Input Relay/Coil module parameters：
●
Modbus Slave Device ID(M)：1
●
Start Address(M)：9
●
NO. Of Relay/Coil(M)：10
●
Module Type(M)：Read DI
Example 2:
If the user wants to write a Modbus analog output module (AO module), Device
ID is 2, data address is 40001~ 40004 and data count is 4.
In this case, the user can select an “Output Register => 4 Words module”, module
parameters are shown in the below:
Output Register module parameters：
●
Modbus Slave Device ID(M)：2
●
Start Address(M)：0
●
Change Word Order：Disable
PS：
a. Relay/Coil module is digital module (DI/DO module), the unit is Byte;
Register module is analog module (AI/AO module), the unit is Word.
b. Modbus Slave Device ID：It is a Modbus slave device address.
c. Start Address：The GW-7552 and Modbus slave device exchange data
from this starting address.
d. NO. of Relay/Coil：It is data size that the GW-7552 and Modbus slave
device exchange.
e. Module Type：The user can select data type for data exchange by this
setting.
„ Write DO(WDO)-- Write Digital Output
„ Write AO(WAO)-- Write Analog Output
„ Read DI(RDI)- Read Digital Input
„ Read DO(RDO)- Read Digital Output
„ Read AI(RAI)-Read Analog Input
„ Read AO(RAO)-Read Analog Output
f. Change Word Order：When this setting is “Enable”, the GW-7552 will