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Technical equipment of TC600 PLC
91
TXV 138 08.02
11.4.1 Errors of Serial Communication
This group of errors is written only to the local stack without the possibil-
ity of evaluation by the user program.
10 05
wrong start delimiter
11 05
SD parity error
11 06
LE parity error at SD2
11 07
LER parity error at SD2
11 09
DA parity error at SD2
11 0A
SA parity error at SD2
11 0B
FC parity error at SD2
11 0C
RB parity error at SD2
11 0D
DAT parity error at SD2
11 0E
CHS parity error at SD2
11 0F
ED parity error at SD2
11 10
DA parity error at SD1
11 11
SA parity error at SD1
11 12
FC parity error at SD1
11 13
CHS parity error at SD1
11 14
ED parity error at SD1
12 07
different value of LE and LER - SD2
13 08
different value of SD and SDR - SD2
14 0A
extended address SA - cannot be processed- SD2
14 11
extended address SA - cannot be processed- SD1
15 0B
error of receiving flag FCF in control byte FC - SD2
15 12
error of receiving flag FCF in control byte FC - SD1
18 0E
wrong checksum CHS - SD2
18 13
wrong checksum CHS - SD1
19 0F
wrong end delimiter ED - SD2
19 14
wrong end delimiter ED - SD1
These errors are caused by excessive disturbances of the
serial communication. They cause loss of the message and
the consequence of their more frequent occurrence is even
disconnection of the communication.
Error 10 05 or some of errors of group 11 may arise on the
one-time basis at establishment of communication with the
superior system in the middle of a message being transmit-
ted by this system. If such errors no more occur in the
course of further communication, everything is correct.
Errors from the CH2 serial channel have the value of the
second byte increased by 20 (for example, error 10 25,
etc.).
20 FC
wrong control byte in combination with a global address
2X RB
unknown communication function (X is the value of the
control byte FC - 3, 4, 5, 6, 9, C, D, E, F)
The PLC does not know the requested communication func-
tion. The system program must be exchanged for a newer
version (version number can be found either in the xPRO
program or on the PLC display after turning on of the power
supply).
11.4.2 System Errors
Using registers S34 and S48 to S51, these errors can be treated as
needed by the user program.
07 00 00 00
error at checking of the remanent zone
The backed part of the scratchpad, the so called remanent
zone, has wrong checksum. Cold restart will be performed.
The cause is a fault in backing of the RAM user memory on
the central unit, the most likely fault is at the backing bat-
tery.
Errors of the serial
communication
protocol
System errors