ABB AC500 PLC Hardware Manual page 1057

1 )
2
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3
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1.7.6.3.8 Diagnosis
Structure of the Diagnosis Block via PNIO_DEV_ALARM Function Block.
Byte Number
1
2
3
4
5
In cases of short circuit or overload, the digital outputs are turned off. The modules performs
reactivation automatically. Thus an acknowledgement of the errors is not necessary. The error
message is stored via the LED.
2019/04/17
The parameter Behaviour DO at comm. error is apply to DC and DO channels
and only analyzed if the Failsafe-mode is ON.
The state "externally voltage detected" appears, if the output of a channel
DC0...DC7 should be switched on while an externally voltage is connected. In
this case the start up is disabled, as long as the externally voltage is connected.
The monitoring of this state and the resulting diagnosis message can be disabled
by setting the parameters to "OFF".
The error state "voltage overflow at outputs" appears, if externally voltage at dig-
ital outputs DC0...DC7 and accordingly DO0...DO7 has exceeded the process
Ä Chapter 1.7.6.3.3 "Electrical Connection" on page 1048
supply voltage UP3
(see description in section). The according diagnosis message "Voltage overflow
on outputs " can be disabled by setting the parameters on "OFF". This parameter
should only be disabled in exceptional cases for voltage overflow may produce
reverse voltage.
Description
Diagnosis Byte, slot
number
Diagnosis Byte, module
number
Diagnosis Byte, channel
Diagnosis Byte, error code
Diagnosis Byte, flags
3ADR010121, 13, en_US
Communication Interface Modules (S500) > PROFINET
Possible Values
31 = CI502-PNIO (e. g. error at integrated
8 DI / 8 DO)
1 = 1st connected S500 I/O module
...
10 = 10th connected S500 I/O module
According to the I/O bus specification
passed on by modules to the fieldbus
master
According to the I/O bus specification
passed on by modules to the fieldbus
master
According to the I/O bus specification
Bit 7 and bit 6, coded error class
0 = E1
1 = E2
2 = E3
3 = E4
Bit 0 to bit 5, coded error description
According to the I/O bus specification
Bit 7: 1 = coming error
Bit 6: 1 = leaving error
Device Specifications
1057