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S5-115U Manual
The entire error code occupies 10 data words or 20 flag bytes. In the following examples and
tables, we assume that the error code is stored in a data block starting with data word 0. The
error code occupies DW 0 through DW 9. In the "Flag" operand area, this corresponds to Flag Byte
0 through Flag Byte 19.
Note
In the case of CPU 941/942, the error code area must not be a DB stored on an EPROM.
In purely EPROM mode, use a flag area or previously tested error-free DB blocks.
Example:
You entered the start address DB3 DW 0 in parameter block "ERT:". The parameters set in DB1
have already been transferred to the programmable controller. Then you continue to set
parameters in DB1. While attempting to transfer the changed DB1 parameters to the pro-
grammable controller, you find out that the programmable controller remains in the STOP mode.
You suspect that the reason the programmable controller remains in the STOP mode is that there
is a parameter error. To find the error, display DB3 on the programmer. The entire contents of
DB3 appear on the screen. DW 0 through DW 9 contain the code for the parameter error. In the
following figure, you see how your screen could look. Below the screen display, is a complete list
of parameter error codes and their meanings.
EWA 4NEB 811 6130-02b
Integral Blocks
11-51
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