Errors - Hitachi Hidic EH-150 EH-OLNK Applications Manual

Chapter 6 Errors and error recovery
6.1

Errors

If an error occurs with the optical link module or an abnormality arises with the transmission route, the
status display LED will indicate the error. The error information will also be set in the special CPU internal
output related to the relevant link module (R7DE, WRF007, WRF0E0 to WRF19F.)
"1" will be set in the special R7DE internal output when the ERR LED for the link module is
illuminated. The link module slot number on which the error occurs will be set in the special
WRF007 internal output at this point. If multiple error modules or transmission routes exist,
the small slot number will be reflected back. Note that once these values have been set in
place, there will remain in existence until cleared with an enforced set/reset function from a
user program or peripheral device. (As the special internal output stored in WRF0E0 to
WRD19F is controlled by the system, it will not remain in existence.) Error information
detected in the CPU module will be cleared by setting "1" is the special R7EC internal output.
Contents
Watchdog errors
ROM/RAM
errors
Transmission
route cut-off
Duplicate station
No.
Station No.
outside of range
Duplicate link
area assignment
Link area outside
of range
Transmission
error
Peripheral data
receiving timeout
Peripheral data
sum error
Peripheral data
address error
Peripheral data
response time-out
*1: Error information will be set separately for each station. Refer to section 4.5 for further details.
*2: The first link error information will be set.
*3: The second link error information will be set.
I/O No.
R7DE
WRF007
Table 6.1 Description of Error displays
Error Information Details of errors
ERR
of own station in each station
LED
2
WRF0E0* WRF0FD+St.No. *
3
WRF140* WRF15D+St.No. *
Light
--
Light
--
Blink
bit 8 ON
(0.5s)
Blink
--
(0.5s)
Blink
bit9 ON
(0.5s)
Blink
bit10 ON
(0.5s)
Blink
bit11 ON
(0.5s)
Blink
-- bit14 ON
(1s)
Blink
bit13 ON bit13 ON
(1s)
Blink
bit13 ON bit13 ON
(1s)
Blink
bit13 ON bit13 ON
(1s)
Blink
-- bit15 ON
(1s)
Table 6.2 Description of Error displays (Monitoring from CPU module)
Name
Link module is abnormal
Link abnormal slot number
1
*
Timing of error detection
2
3
During microcomputer errors
--
When the power is switched on,
--
when ROM/RAM errors occur
When the transmission route is
--
cut off
When station No.s are duplicated - Switch on the power supply after the
--
When the dip-switch settings are
--
outside of the 0 to 63 range
When link assignment areas are
--
duplicated
When the link area specification
--
from the CPU is outside of the
range
When a transmission frame error
occurs
When a transmission time-out
occurs during peripheral data
transmission
When an abnormality occurs with
the peripheral data sum value
from the CPU
When an abnormality exists with
the transmitting station No.
When a response time-out occurs
0 : Normal
1 : Abnormal
I/O slot number different from parameter setting is stored
15 12 11
"0"
a : Unit number (0 to 2)
b : Slot number (0 to 2 )
6-1
Chapter 6. Errors and error recovery
Timing of clearing error
- Switch on the power supply again.
- Press the [RESET] switch.
- Switch on the power supply again.
- Press the [RESET] switch.
- During transmission route recovery.
cause of the error has been resolved.
- Press the [RESET] switch after the
cause of the error has been resolved.
- Switch on the power supply after the
cause of the error has been resolved.
- Press the [RESET] switch after the
cause of the error has been resolved.
- When the link modules detects that
the error has been resolved.
- Switch on the power supply again
- Press the [RESET] switch.
- Press the [E.CRL] switch.
- When the link modules detects that
the error has been resolved.
Contents
8 7 4 3
a b "0"
0