112
Figure 149: CS121 WDP connecting PINs on a CS121 SC/BSC board – top
view
E. MODBUS Interface
E.1. General information
For remote control and monitoring of devices the MODBUS interface in each CS121 M can
read out measurement values, events, status and other information in a master-slave protocol.
Note: Please note that not all UPS models support all or specific measurement
values (e.g. battery low).
Communication Parameters:
ASCII Mode works at CS131 & CS121 platforms with communcation
parameters 7/E/2, or 7/E/1 or with 7/N/2 from baudrate 1200 to 38400. We
recommend for ASCII the use of 7/N/2 and the highest baudrate supported by
your device.
RTU Mode works at CS131 & CS121 platforms with communcation
parameters 8/E/1 or 8/N/2 or 8/N/1 or 8/E/2 or 8/O/2 or with 8/O/1 from
baudrate 1200 to 38400. We recommend for RTU the use of 8/E/1 and the
highest baudrate supported by your device.
MODBUS Parameter
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