42
Service Manual Combics
The following error messages are possible:
Operating Design | Error Description Test Combics | 1 | 2 | 3
SCL2-RS485 LOOPBACK
If A7 is available:
No data connection via
the IS interface
-Option A10 (not allowed with A7)
-Connection cable between digital PCB and
interface not inserted or defective
-A7 interface defective
-Digital PCB defective
LOOPBACK TxD RxD loopback to
COM 1 interrupted
COM1 232
DTR / CTS DTR CTS loopback to
COM 1 interrupted
-Cable option does not have a DTR
signal (for CTS/DTR)
-Test adapter missing
-Digital PCB defective
LOOPBACK TxD RxD loop back to
UNICOM interrupted
OPT RS232
DTR/CTS DTR CTS loop back to
UNICOM interrupted
-Cable option does not have a DTR
signal (for CTS/DTR)
-Test adapter missing
-PCB (option) defective or not inserted
correctly into digital PCB
-Digital PCB defective
OPT RS422 LOOPBACK TxD RxD loop back to
UNICOM interrupted
-Test adapter missing
-PCB (option) defective or not inserted
correctly into digital PCB
-Digital PCB defective
OPT RS485 LOOPBACK TxD RxD loop back to
UNICOM interrupted
-PCB (option) defective or not inserted
correctly into digital PCB
OPT
DIGTAL
INPUT Loop back between input
and output interrupted
-Test adapter inserted incorrectly
-No 15V power supply for test adapter
-PCB (option) defective or not inserted
correctly into digital PCB
-Digital PCB defective
OPT
ANALOG
None, but
LED does not
flash
Data output without an
output signal
-PCB (option) defective or not inserted
correctly into digital PCB
-Digital PCB defective
ACCESS No access possible to
Profibus interface
-PCB (option) defective
-Digital PCB defective
WRITE Defective access to
Profibus interface
-PCB (option) defective
-Digital PCB defective
PROFIBUS
ANY-IC Defective access to
Profibus interface
-PCB (option) defective
Ethernet ACCESS No access possible to
Profibus interface
-PCB (option) defective
-Digital PCB defective
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