ABB ACS2000 AFE 2MVA - Page 165

165 ACS2000 AFE 2MVA UM 3BHS355653 ZAB E01 REV. H
Modbus RTU interface
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References
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10-7 Modbus RTU
interface
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10-7
Bus-cable term
inals
Fiber-optic co
nnectors for communicat
ion cable to the drive
-
TXD = transmitter
-
RXD = receiver
Status LEDs
Switch for b
us termination
1
2
3
4
1
2
3
4
LED Meaning
XMIT Flashing Interface transmits a response or an exception
REC Flashing Interface receives a command from the Modbus network
ERROR Flashing If the received command has a parity error, or
if the received command has a CRC error, or
if the received command is not supported by the interface, or
if the interface has detected an error
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Table 10-3 Modbus RTU LED description
LED Error indication Meaning
XMIT, REC, ERROR On ROM checksum test failed
REC, ERROR On RAM test failed
ERROR On DDCS-ASIC-register-access test failed