M+Sf_2Hand3_R - Mitsubishi Electric MELSEC iQ-R Series Safety Function Block Reference

4.2

M+SF_2HAND3_R

Overview
Item Description
Function name Two-hand switch Type 
This FB provides the two-hand control functionality (see ISO13851, Type . Fixed specified time difference is 500ms).
Functional overview
Symbol
(1) B: i_bActivate
(2) B: i_bS_Button1
(3) B: i_bS_Button2
Labels
■ Input labels
No. Variable name Data type
(1) i_bActivate Bit
(2) i_bS_Button1 Bit*
(3) i_bS_Button2 Bit*
■ Output labels
No. Variable name Data type
(4) o_bReady Bit
(5) o_bS_TwoHand_Out Bit*
(6) o_bError Bit
(7) o_wDiagCode Word [signed]
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.
FB details
This FB provides the two-hand control functionality according to ISO13851, Section 4 Type . If i_bS_Button1 and
i_bS_Button2 are set to ON in correct sequence, then o_bS_TwoHand_Out output will also be set to ON. The FB also controls
the release of both buttons before setting output o_bS_TwoHand_Out again to ON.
M+SF_2HAND3_R
o_bReady: B
o_bS_TwoHand_Out: B
o_bError: B
o_wDiagCode: W
Default value Description
OFF Activation of the safety FB.
For details, see the following.
Page 11 General Functions
OFF Input of button 1 (for category 3 or 4: two antivalent contacts)
OFF: Button 1 released.
ON: Button 1 actuated.
OFF Input of button 2 (for category 3 or 4: two antivalent contacts)
OFF: Button 2 released.
ON: Button 2 actuated.
Default value Description
OFF Status of whether the safety FB is activated or not.
For details, see the following.
Page 11 General Functions
OFF Safety output signal.
OFF: No correct two-hand operation.
ON: i_bS_Button1 and i_bS_Button2 inputs are ON and no error occurred. Correct
two-hand operation.
OFF Error flag.
For details, see the following.
Page 11 General Functions
0 Diagnostic code.
For details, see the following.
Page 11 General Functions
(4)
(5)
(6)
(7)
4 SAFETY FB SPECIFICATIONS
4.2 M+SF_2HAND3_R
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