ABB ACS2000 AFE 2MVA User Manual 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
LED
XMIT
REC
ERROR
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Table 10-3 Modbus RTU LED description
LED
XMIT, REC, ERROR
REC, ERROR
ERROR
2
3
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10-7
Flashing
Flashing
Flashing
Error indication
On
On
On
1
1
2
3
4
4
Meaning
Interface transmits a response or an exception
Interface receives a command from the Modbus network
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
Meaning
ROM checksum test failed
RAM test failed
DDCS-ASIC-register-access test failed
Bus-cable terminals
Fiber-optic connectors for communication cable to the drive
- TXD = transmitter
- RXD = receiver
Status LEDs
Switch for bus termination