Mitsubishi Electric MELSEC iQ-R Series User Manual page 158

Disconnection detection flag
Normal
By setting 4 to 20mA for the output range and enabling the D/A conversion, a disconnection can be detected for each
channel.
b15 b14 b13 b12 b11 b10 b9
0 0 0 0 0
(1) 0: Normal, 1: Disconnection detection
(2) b4 to b15 are fixed to 0.
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory name
Disconnection detection flag
■Disconnection detection flag status
• When a disconnection is detected, Disconnection detection (1) is stored in the corresponding bit of 'Disconnection
detection flag' (Un\G38) corresponding to each channel.
• When a disconnection is detected in any channel, 'Disconnection detection signal' (XD) turns on.
■Clearing Disconnection detection flag
The method to clear Disconnection detection flag varies depending on the operation mode. Even if the disconnection cause is
eliminated, the analog output does not restart automatically to prevent an incorrect output. The method to clear Disconnection
detection flag and restart analog output varies depending on the operation mode. ( Page 41 Clearing disconnection
detection)
Operation mode monitor
Common
The current operation mode is stored.
Monitored value
0
1
4
5
11
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory name
Operation mode monitor
APPX
156
Appendix 3 Buffer Memory Areas
Wave
b8 b7 b6 b5 b4
0 0 0 0 0 0 0
(2)
Synchronization
b3 b2 b1 b0
CH4 CH3 CH2 CH1
(1)
CH1 CH2
38
Description
High-speed output mode (conversion speed: 1s/CH)
Normal output mode (conversion speed: 10s/CH)
Inter-module synchronization mode
Offset/gain setting mode
Wave output mode (conversion speed: 20s/CH)
CH1 CH2
60
CH3 CH4
CH3 CH4