Mitsubishi Electric R60AD8-G - Page 152

150
APPX
Appendix 3 Buffer Memory Areas
Alert output flag (Rate alarm) [Q compatible mode]
When the Q compatible mode function is used, the upper/lower limit alarm of the rate alarm can be checked.
■Buffer memory address
The following shows the buffer memory address of this area.
Only the R60AD8-G can use this area.
■Alert output flag status
• When the value is out of the range specified in the rate alarm upper limit value or rate alarm lower limit value, Alarm ON (1)
is stored in Alert output flag (Rate alarm) corresponding to each channel.
• When an alert is detected in any channel where the A/D conversion and the alert output setting (Rate alarm) are enabled,
'Alert output signal' (X8) also turns on.
■Clearing Alert output flag
• When the change rate of the digital output value returns within the setting range, the flag is automatically cleared.
• When 'Operating condition setting request' (Y9) is turned on and off, the flag is cleared.
Input signal error detection flag
The status of an input signal can be checked for each channel.
■Buffer memory address
The following shows the buffer memory address of this area.
■Input signal error detection flag status
• When an analog input value out of the range specified in Input signal error detection setting value is detected, Input signal
error (1) is stored in 'Input signal error detection flag' (Un\G40) corresponding to each channel.
• When an error is detected in any channel where the A/D conversion and the input signal error detection are enabled, 'Input
signal error detection signal' (XC) turns on.
■Clearing Input signal error detection flag
'Input signal error detection flag' (Un\G40) is turned off by turning on and off 'Error clear request' (YF) after the analog input
value returns within the setting range.
When 'Operating condition setting request' (Y9) is turned on and off, 'Input signal error detection flag' (Un\G40) is also
cleared.
0: Normal, 1: Alarm ON
Buffer memory name CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8
Alert output flag (Rate alarm) (in Q compatible
mode)
51
• 0: Normal, 1: Input signal error
• b8 to b15 of the R60AD8-G are fixed to 0.
Buffer memory name CH
1
CH
2
CH
3
CH
4
CH
5
CH
6
CH
7
CH
8
CH
9
CH
10
CH
11
CH
12
CH
13
CH
14
CH
15
CH
16
Input signal error detection flag 40
Input signal error detection flag (in Q compatible
mode)
49 
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b0b1b2b3b4
CH1CH2 CH1CH2CH3CH4 CH4 CH3CH5CH6 CH5CH6CH7CH8 CH8 CH7
Lower limit value Upper limit value Lower limit value Lower limit value Lower limit value Lower limit value Lower limit value Lower limit value Lower limit value Upper limit value Upper limit value Upper limit value Upper limit value Upper limit value Upper limit value Upper limit value
CH16 CH15 CH14 CH13 CH12 CH11 CH10 CH9 CH1CH2CH3CH4CH5CH6CH7CH8
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b0b1b2b3b4