Description Of Error Indication - Hitachi H Series Instruction Manual

2.2 Description of error indication

See the application manual (separate account) for the CPU module special
internal output (R7DE, WRF007, WRF0E0 – WRF19F) related to CPU link
module.
As for the content of R7DE (CPU link module error), "1" is set when ERR LED
on the CPU link module is lit. Further, the slot number of the CPU link
module, in which an error occurred, is set in WRF007.
However, when errors occur with multiple modules, the smaller slot number is
reflected. Care should be exercised in that these contents, when set once, are
held as they are until they are cleared from a programming device using
forced set / reset function. Furthermore, these error data are entirely cleared
when special internal output R7EC is set.
The contents in detail of errors WRF0E0 - WRF19F are managed by the
system, and they are not held.
No. Contents
1 WD error
2 ROM/RAM
error
3 Transfer error
4 Transfer time
over
5 Channel open
circuit
: Lit
Error
STATE display LED
ON
ON
OFF
OFF
ON
16
: OFF
Timing of ON
*2
On occurrence
of an error to the
microcomputer
At the time of
power ON.
On occurrence
of an ROM /
RAM error.
On occurrence
of transfer frame
error.
On occurrence
of transfer time-
out during
transmission of
peripheral data.
On occurrence
of channel open
circuit.
: Lit or OFF
Timing of
Remarks
OFF
Reset *1
Reset *1 Occurrence of
ROM / RAM
error
↓
WD error.
･Reset *1
Long transfer
･Error clear statement
error, CRC
switch
error
sents station
No.00 - 63
･Reset *1
･Error clear
switch
sents station
No.00 - 63
･Reset *1
･On
sents station
recovery of
No.00 - 63
channel
repre-
repre-
repre-