ICP DAS USA GW-7552-B User Manual page 37

Change Word Order：Enable/Disable (Even module only)
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Example 1:
If the user wants to read a Modbus digital input module (DI module), Device ID is
1, data address is 10010~10019, and data count is 10.
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
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Start Address(M)：9
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NO. Of Relay/Coil(M)：10
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Module Type(M)：Read DI
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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
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Start Address(M)：0
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Change Word Order：Disable
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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-B / GW-7552-M and Modbus slave device
exchange data from this starting address.
d. NO. of Relay/Coil：It is data size that the GW-7552-B / GW-7552-M 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
GW-7552-B / GW-7552-M PROFIBUS/MODBUS GATEWAY User Manual (Version 1.60, May/2017) PAGE: 37