M+Sf_Equi_R - Mitsubishi Electric MELSEC iQ-R Series Safety Function Block Reference

4.15

M+SF_EQUI_R

Overview
Item Description
Function name Dual input (NC+NC or NO+NO])
Functional overview This FB converts two equivalent bit inputs (both NO or NC) to one bit with discrepancy time monitoring. This FB output shows the result
of the evaluation of both channels.
Symbol
(1)
(2)
(3)
(4)
Labels
■ Input labels
No. Variable name
(1) i_bActivate
(2) i_bS_ChannelA
(3) i_bS_ChannelB
(4) i_dDiscrepancyTime
■ Output labels
No. Variable name
(5) o_bReady
(6) o_bS_EquivalentOut
(7) o_bError
(8) o_wDiagCode
WARNING
• Use safety data for connecting the variable whose data type is "Bit*" to input-output circuits.
• A safety program is executed as a fixed scan execution type program.
• A safety program is executed at a fixed cycle according to a set safety cycle time. The safety FB that monitors the time must meet the following requirements.
⋅ The timeout processing may be delayed by the safety cycle time by executing the safety program. Set the safety cycle time so the delay by the safety
cycle time does not pose a hazard.
⋅ If the program is executed exceeding the safety cycle processing time, the timeout may be delayed. Ensure that an abnormality does not occur during
operation.
4 SAFETY FB SPECIFICATIONS
102
4.15 M+SF_EQUI_R
M+SF_EQUI_R
B: i_bActivate
B: i_bS_ChannelA o_bS_EquivalentOut: B
B: i_bS_ChannelB
D: i_dDiscrepancyTime
Data type Default value
Bit OFF
Bit* OFF
Bit* OFF
Double word 0
[signed]
Data type Default value
Bit OFF
Bit* OFF
Bit OFF
Word [signed] 0
o_bReady: B (5)
(6)
o_bError: B (7)
o_wDiagCode: W (8)
Description
Activation of the safety FB.
For details, see the following.
Page 11 General Functions
Safety input signal A
OFF: Contact A OFF
ON: Contact A ON
Safety input signal B
OFF: Contact B OFF
ON: Contact B ON
Configures the monitoring time for discrepancy status of i_bS_ChannelA and
i_bS_ChannelB (in increments of 10ms).
Range: Fixed values from 0 to 60000 (0 to 600000ms = 10min)
Description
Status of whether the safety FB is activated or not.
For details, see the following.
Page 11 General Functions
Safety output signal.
OFF: Either i_bS_ChannelA or i_bS_ChannelB, or both of them are set to OFF. Or,
both i_bS_ChannelA and i_bS_ChannelB are set to ON, but the time is out of the
monitoring time of i_dDiscrepancyTime.
ON: Both i_bS_ChannelA and i_bS_ChannelB have been set to ON within the
monitoring time of i_dDiscrepancyTime.
Error flag.
For details, see the following.
Page 11 General Functions
Diagnostic code.
For details, see the following.
Page 11 General Functions