ABB ACS2000 DFE - Page 144

144 ACS2000 DFE UM 3BHS360367 ZAB E01 REV. K
Modbus RTU interface
Profibus interface
—
References
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10-7 Modbus RTU
interface
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10-8 Profibus interface
—
10-7
1. Bus-cable terminal
s
2. Fiber-optic connec
tors for communication
cable to the drive
-TXD = transmitt
er
-RXD = receiver
3. Status LEDs
4. Switch for bus termi
nation
—
10-8
1. Fiber-optic connec
tors for communication ca
ble
to the drive
-TXD = transmitt
er
-RXD = receiver
2. Reset button for ini
tialization of module
3. Status LEDs
4. Bus-cable terminals
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
During start-up LED
Master MSG DDCS
Power-on Off Off Green then red then off
Off Green then red then off Off
Green then red then off Off Off
DDCS link initialization Off Off Flashing green then green
Transfer-rate detection Flashing green then green Off Green
Communication established Green Flashing green then green Green
Operation Green Green Green