ICP DAS, MDC-211-ZT user manual , v1.0 Page 21
Copyright © 2018 by ICP DAS. All rights are reserved.
2.6.
Check Modbus RTU Device Communication Status
The user can view and monitor the status of each Modbus command directly on the
MDC-211-ZT Web interface. This section describes how to check the Modbus command
status, real-time monitor the I/O channel status of Modbus RTU device, and inquire the
relationship for the Modbus RTU device I/O and the MDC-211-ZT Internal Register address.
2.6.1.
Check polling status of Modbus command
Click "I/O Information"
→
"Internal Register", the browser will load the Modbus
command real-time information as Figure 2.12, the descriptions please see Table 2.2.
Figure 2.12 Modbus Command Communication real-time Status page
Table 2.2 I/O information real-time display description
Item
Description
ID
Modbus RTU Slave Module Station number
Number
MDC-211-ZT Modbus Command Polling order and corresponding
Internal Register order
Remote
Modbus RTU Slave Module Register address
MDC-211-ZT
MDC-211-ZT Internal Register address
Status
Modbus Command Polling status
If want to inquire the Modbus command communication status between MDC-211-ZT and
Modbus RTU devices, please refer to the “Status" item: