Mitsubishi MELSEC-Q series Programming Manual page 149

(4) Engineering value conversion
Engineering value conversion is made with the following expression.
RH RL
PV E1 RL
100
(5) Loop stop processing
(a) Setting 1 in SPA of the alarm detection (ALM) selects a loop stop.
A loop stop performs the following processing and terminates the S.PHPL instruction.
1) Engineering value reverse conversion is performed with the following expression.
100
BW
RH RL
2) BB1 to BB5 of BB are turned to 0.
3) DPNA, DPPA, LLA, HHA, PLA and PHA of the alarm detection (ALM) are turned to 0.
(b) Setting 0 in SPA of the alarm detection (ALM) selects a loop run.
A loop run performs "(1) Engineering value reverse conversion".
Operation Error
In the following cases, the error flag (SM0) turns ON and the error code is stored in SD0.
Error code
When an operation error occurs
When the values of
normalized number
4100
When the execution cycle (SD1500) < 0
When DPL < -DPL
When CTIM < 0
When the values of
4140
normalized number
4141 When an operation error occurs
(PV RL)
Error definition
, are either a non-numeric or non-
S1 D2
, are either a non-numeric or non-
S1 D2
QnPHCPU QnPRHCPU
–– ––
–– ––
S.PHPL
9
2
3
4
4
6
QnUDPVCPU
––
7
––
8
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