Mitsubishi Electric MELSEC iQ-R Series Safety Function Block Reference page 57

No. Variable name Data type
(14) i_bReset Bit
■ Output labels
No. Variable name Data type
(15) o_bReady Bit
(16) o_bS_Mode0Sel Bit*
(17) o_bS_Mode1Sel Bit*
(18) o_bS_Mode2Sel Bit*
(19) o_bS_Mode3Sel Bit*
(20) o_bS_Mode4Sel Bit*
(21) o_bS_Mode5Sel Bit*
(22) o_bS_Mode6Sel Bit*
(23) o_bS_Mode7Sel Bit*
(24) o_bS_AnyModeSel Bit*
(25) o_bError Bit
(26) o_wDiagCode Word [signed]
WARNING
Use safety data for connecting the variable whose data type is "Bit*" to input-output circuits.
FB details
This FB selects the system operation mode, such as manual, automatic, and semi-automatic. The default state is changed to
the ModeChanged state (8005H), where all o_bS_ModeXSel and o_bS_AnyModeSel are OFF, after the activation of the FB.
For the transition from the ModeChanged to ModeSelected state, the following conditions are required.
• i_bAutoSetMode=OFF
When i_bS_SetMode is set to ON, the new i_bS_ModeX input leads to an o_bS_ModeXSel output.
• i_bAutoSetMode=ON
The new i_bS_ModeX input automatically leads to a new o_bS_ModeXSel output.
The transition from the ModeChanged to ModeSelected state is only valid, if one i_bS_ModeX is ON. In addition, the
transition from one i_bS_ModeX input (only one i_bS_ModeX from i_bS_Mode0 to i_bS_Mode7 is ON) to ModeSelected state
(8000H) is not monitored by a timer.
If the FB is in the ModeSelected state, the simultaneously occurrence of a new i_bS_ModeX input (higher priority) and the
OFF i_bS_Unlock signal (lower priority) leads to the ModeChanged state.
The i_bS_ModeX input parameters, which are not used for mode selection, should be called with the default value OFF to
simplify program verification. i_bAutoSetMode input shall only be activated if it is ensured that no hazardous situation can
occur when the safety programmable controller is started.
Default value Description
OFF Reset input.
For details, see the following.
Page 11 General Functions
Default value Description
OFF Status of whether the safety FB is activated or not.
For details, see the following.
Page 11 General Functions
OFF Indicates that mode 0 is selected and acknowledged.
OFF: Mode 0 is not selected or not active.
ON: Mode 0 is selected and active.
OFF Indicates that mode 1 is selected and acknowledged.
OFF Indicates that mode 2 is selected and acknowledged.
OFF Indicates that mode 3 is selected and acknowledged.
OFF Indicates that mode 4 is selected and acknowledged.
OFF Indicates that mode 5 is selected and acknowledged.
OFF Indicates that mode 6 is selected and acknowledged.
OFF Indicates that mode 7 is selected and acknowledged.
OFF Indicates that any of the 8 modes is selected and acknowledged.
OFF: No i_bS_ModeX is selected.
ON: One of the 8 i_bS_ModeX is selected and active.
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 SAFETY FB SPECIFICATIONS
4.9 M+SF_MODSEL_R
4
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