Remarks:
1
)
In AC500 the following interface identifier applies:
"-" = Diagnosis via bus-specific function blocks; 0 ... 4 or 10 = Position of the
Communication Module;14 = I/O bus; 31 = Module itself
The identifier is not contained in the CI502-PNIO diagnosis block.
2
)
With "Device" the following allocation applies: 31 = Module itself, 1..10 = Expan-
sion module
3
)
With "Module" the following allocation applies dependent of the master:
Module error: 31 = Module itself
Channel error: Module type (1 = AI, 2 = DO, 3 = AO)
4
)
This message appears, if externally voltages at one or more terminals DC0...DC7
oder DO8...DO15 cause that other digital outputs are supplied through that
voltage (voltage feedback, see description in 'Connections'
. All outputs of the apply digital output groups will be
turned off for 5 seconds. The diagnosis message appears for the whole output
group.
5
)
The voltage at digital outputs DC0...DC7 and accordingly DO8...DO15 has
exceeded the process supply voltage UP3
Chapter 1.7.4.2.3 “Connections”
. Diagnosis message appears for the whole module.
6
)
This message appears, if the output of a channel DC0...DC7 or DO8...DO15
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. Otherwise
this could produce reverse voltage from this output to other digital outputs. This
diagnosis message appears per channel.
7
)
Short circuit: After a detected short circuit, the output is deactivated for 2000ms.
Then a new start up will be executed. This diagnosis message appears per
channel.
8
)
In case of an I/O module doesn’t support hot swapping, do not perform any hot
swap operations (also not on any other terminal units (slots)) as modules may be
damaged or I/O bus communication may be disturbed.
9
)
Diagnosis for hot swap available as of version index F0.
State LEDs
The LEDs are located at the front of module. There are 2 different groups:
● The 5 system LEDs (PWR, STA1 ETH, STA2 ETH, S-ERR and I/O-Bus) show the operation
state of the module and display possible errors.
● The 29 process LEDs (UP, UP3, inputs, outputs, CH-ERR1 to CH-ERR3) show the process
supply voltage and the states of the inputs and outputs and display possible errors.
Table 164: States of the 5 system LEDs
LED
Color
OFF
ON
Flashing
PWR/RUN
Green
Process supply
voltage missing
Internal supply
voltage OK,
module ready for
communication
with I/O Con-
troller
Start-up / pre-
paring communi-
cation
Yellow
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Device specifications
Communication interface modules (S500) > Modbus
2022/01/31
3ADR010278, 3, en_US
787
