switched o. For diagnostic messages which refer to individual channels, only the
corresponding digital input is aected.
Diagnostics
message
Error
code
Assignment Meaning Solution
Wire break 6
H
Digital input Impedance of encoder circuitry is too
high
Use a dierent encoder type or
modify the wiring, for example,
using cables with a larger cross-
section
Wire break between the module and
sensor
Connect the cable
Channel not connected (open)
• Disable diagnostics
• Connect encoder contacts
with a 15 kΩ to 18 kΩ resistor
1
Parameter as‐
signment error
10
H
Module
• Parameter assignment does not
match the terminal block used
• Incorrect parameter assignment
• Correct the parameter assign‐
ment
• Check terminal block
2
Supply voltage
missing
11
H
Module Missing or insucient supply voltage
L+
• Check wiring of the supply
voltage L+ on the terminal
block
• Check the terminal block type
Channel/compo‐
nent temporarily
unavailable
1F
H
Module Update of the rmware is being per‐
formed or has been canceled.
The module does not import any
process values during this time.
• Restart rmware update
• Wait for rmware update
Hardware inter‐
rupt lost
16
H
Module Error is reported because the events
occur faster than they can be pro‐
cessed in the system
Module is faulty 100
H
Module Internal module error has occurred Replace I/O module
Retentive memo‐
ry in carrier mod‐
ule defective
154
H
Module A memory block fault on the support
module was detected during start-up
Replace carrier module
Retentive memo‐
ry in the terminal
block defective
155
H
Module A memory block fault on the terminal
block was detected during start-up
Replace terminal block
1
47 kΩ resistors can be used provided that the following supplementary conditions are complied with: Only singular structure
of the IO modules (no IO redundancy); the process cables are shielded; no certication required according to the following
standards: NE21 or Power Station 6100-6-5.
2
Only the terminal blocks (TB 45 ...) are suitable for use of IO modules in IO redundancy.
A.4 Maintenance events
Maintenance events
A maintenance event is generated whenever maintenance is required. The MT LED lights up on
the module.
Parameters, diagnostics messages and address space
A.4 Maintenance events
DI 8x24...125VDC HA
38 Equipment Manual, 10/2021, A5E39288633-AD