ICP DAS, ZT-257x DIO Data Concentrator Quick Start Guide, v1.0
Page 11
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11.
Modbus Slave ID: (
-
This parameter is used to configure the Modbus Slave ID for a ZT-257x module.
When using a ZT-257x module as a ZigBee DIO data concentrator, the module
allows the external host (or controller) to read data from or write data to the
ZT-20xx-IOG DIO module using the Modbus protocol. Consequently, a Modbus ID
must be assigned to the ZT-257x module.