Mitsubishi Electric MELSEC iQ-R Series User Manual page 141

Disconnection detection flag
By setting 4 to 20mA for the analog 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 0 0
(2)
(1) 0: Normal, 1: Disconnection detection
(2) b4 to b15 of the R60DA4 and b8 to b15 of the R60DAV8 and R60DAI8 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 (When the Q
compatible mode function is used)
■Disconnection detection flag status
• When a disconnection is detected, Disconnection detection (1) is stored in '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
Even if the disconnection cause is eliminated, the analog output does not restart automatically to prevent an incorrect output.
To restart the analog output, check CH Digital value and turn on and off 'Error clear request' (YF). According to the status of
CH Output enable/disable (Y1 to Y8), the analog output restarts.
When the analog output restarts, the disconnection detection flag of the corresponding channel is cleared.
Output mode
In the normal mode, the set output mode can be checked.
Monitor value
0H
1H
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory name
Output mode
Output mode (When the Q compatible mode
function is used)
b8 b7 b6 b5 b4 b3 b2
0 CH8 CH7 CH6 CH5 CH4 CH3 CH2
(1)
CH1 CH2
38
49
CH1 CH2
60
9
b1 b0
CH1
CH3 CH4 CH5
Description
Normal output mode
Wave output mode
CH3 CH4 CH5
CH6 CH7 CH8
CH6 CH7 CH8
APPENDICES
Appendix 3 Buffer Memory
A
139