4 SAFETY FB SPECIFICATIONS
4.2 M+SF_2HAND3_R
19
4
4.2 M+SF_2HAND3_R
Overview
Labels
■ Input labels
■ Output labels
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.
Item Description
Function name Two-hand switch Type
Functional overview This FB provides the two-hand control functionality (see ISO13851, Type . Fixed specified time difference is 500ms).
Symbol
No. Variable name Data type Default value Description
(1) i_bActivate Bit OFF Activation of the safety FB.
For details, see the following.
Page 11 General Functions
(2) i_bS_Button1 Bit* OFF Input of button 1 (for category 3 or 4: two antivalent contacts)
OFF: Button 1 released.
ON: Button 1 actuated.
(3) i_bS_Button2 Bit* OFF Input of button 2 (for category 3 or 4: two antivalent contacts)
OFF: Button 2 released.
ON: Button 2 actuated.
No. Variable name Data type Default value Description
(4) o_bReady Bit OFF Status of whether the safety FB is activated or not.
For details, see the following.
Page 11 General Functions
(5) o_bS_TwoHand_Out Bit* 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.
(6) o_bError Bit OFF Error flag.
For details, see the following.
Page 11 General Functions
(7) o_wDiagCode Word [signed] 0 Diagnostic code.
For details, see the following.
Page 11 General Functions
• 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.
o_bS_TwoHand_Out: BB: i_bS_Button1
B: i_bActivate o_bReady: B
B: i_bS_Button2 o_bError: B
o_wDiagCode: W
(1) (4)
(2) (5)
(3) (6)
(7)
M+SF_2HAND3_R
WARNING
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