Siemens SIMATIC ET 200SP IM 155-6 DP HF Manual page 36

The following table is used to explain the channel error entries:
Channel number
Channel properties
Channel error type
Interface module IM 155-6 DP HF (6ES7155-6BA01-0CN0)
Manual, 10/2018, A5E03916550-AD
Interrupts, error messages, diagnostics and system alarms
Description
0 to 63: Channel number for channel error
0x8000: Entire submodule
Bit 0 to 7 00 : Free data type
H
01 : bit
H
02 : 2 bit
H
03 : 4 bit
H
04 : byte
H
05 : word
H
06 : Double word
H
07 bis FF
H H
Bit 8 0: Channel
1: Channel group
Bit 9, 10 00 : Diagnostics
H
01 : Maintenance demanded
H
02 : Maintenance required
H
03 : Reserve
H
Bit 11, 12 00 : Channel error-free
H
01 : Incoming diagnostics
H
02 : Outgoing diagnostics
H
03 : Outgoing diagnostics, but other diagnostics are also
H
pending on this channel
Bit 13 to 15 00 : Reserve
H
01 : Input channel
H
02 : Output channel
H
03 : Input/output channel
H
Refer to respective manual for explanation.
: Reserve
5.2 Interrupts
35