User Manual
Industrial Ethernet Serial Gateway
Modbus Serial/TCP Series
WWW.SSTCOMM.COM
20
3.3.4 ID mapping (Advanced parameters)
When you select RTU slave or ASCII slave mode, and only configure the basic configuration, this cannot be
configured.
When you select RTU master or ASCII master mode, please indicate which server the request packets are
sent to.
Virtual Slave ID Range——enter an ID range, the left is minimum, the right is maximum (no more than
247);
Offset of Slave ID——D-value of virtual ID and actual ID (can be negative);
Actual Salve ID——by clicking “Set” button to calculate;
When selecting “RTU/ASCII slave mode”, users need to specify the serial port to be mapped.
When selecting “RTU/ASCII master mode”, users need to set “IP of Target TCP server”, that is the IP
address of the server to be connected.
After setting “Virtual slave ID Range” and “Offset of Slave ID”, click “Set” button, “Actual Salve ID” value
is automatically calculated.
When users click “Add” button, users can add a message in “Slave ID Mapping Table”.
When users want to modify the added information, users fist select the information you want to modify, and
