Specifications

I Alarms
Safety Observation Alarms (Y)
I - 35
Y20 Safety observation: module mount error 0030 (Unconfirmed module to be mounted )
Details
Some of the dual signal modules in the parameter "#21125 SSU_num (Number of dual signal
modules)" are not confirmed to be mounted.
Alarm No. shows the unconfirmed module to be mounted at the bit-level.
("0006" indicates the module No.2 and 3.)
Remedy
Make sure that the dual signal modules entered in the parameter are all mounted.
Make sure that the remote I/O cable is connected.
Check for any overlapped station No. set with rotary switch of dual signal module.
Y20 Safety observation: parameter memory error 0031 (Parameter No.)
Details
- The parameters related to the safety observation function are not consistent with the check
data, due to destruction of memory or other reason.
- Any value is set to #2448, #2449, #13248, or #13249 when "#21162(PR) mulstepssc Multi-
step speed monitor enabled" is "1".
Remedy
- Correct the parameter settings.
- When any value is set to #2448, #2449, #13248,
or #13249 when "#21162(PR) mulstepssc Multi-step speed monitor enabled"
is "1", set "0" to these parameters.
(Note) If the NC system is updated from the one older than Ver. C4 to the one equal or newer
than Ver. C4, the error may occur. The error can be cleared by restarting the NC.
Y20 Safety observation: PLC CPU type error 0032
Details
The PLC CPU type of the 1st module doesn’t support the safety observation function.
Remedy
Check the PLC CPU type.
Contact the service center.
Y20 Dual-signal comparison sequence error (NC side) 0033
Details
NC side's dual-signal comparison sequence data is overwritten.
Remedy
Rewrite the NC side's dual-signal comparison sequence.
Y20 Dual signal PC parameter illegal 0034 xxyy
Details
PC parameter settings which were written to in the PLC CPU is illegal.
Remedy
Refer to the following error indication "xxyy" to correct the setting.
- xx = 01
There is a contradiction between the setting of the dual signal module's head XY devices in
I/O assignment setting and NC parameters "#21143 SSU_Dev1" - "#21145 SSU_Dev3".
Check the dual signal module's position, then make the same setting for PC parameters and
NC parameters.
"yy" shows the module No. (yy=01 to 03)
- xx = 02
In I/O assignment's detail settings, output mode of the dual signal module at error is set to
"Hold".
Set the output mode to "Clear".
"yy" shows the module No. (yy=01 to 03)
- xx = 03
The number of device points in device settings is illegal.
Correct the number of device points.
"yy" shows the No. corresponding to the device.
The correspondence between Nos. and devices is as follows:
00: M
02: L
03: F
04: V
10: B
11: SB
18: D
24: W
25: SW
32: T
35: C
38: ST
- xx = 04
High-speed timer limit is set to other than "10.00".
Set the high-speed timer limit to "10.00".
Y20 Safety observation PC parameter get error 0035
Details
PLC CPU's PC parameters couldn't be got.
Remedy
Check if the PC parameters are correctly written in the PLC CPU.
Contact service center.
Y20 Safety observation parameter setting lock password data error 0036
Details
The password that is used to lock the safety observation parameter setting is incorrect.
Remedy
Read the password data in text format, then set the
data in "#21150 Safety_key (Safety observation parameter password-lock
cancel key)".