Basics
3.17 Traversing range limitation
S7-1500 Motion Control V13 Update 3
68 Function Manual, 07/2014, A5E03879256-AC
The following technology object tags are relevant for software limit switches:
<TO>.StatusWord.X15 (SWLimitMinActive)
Negative software limit switch is enabled
<TO>.StatusWord.X16 (SWLimitMaxActive)
Positive software limit switch is enabled
<TO>.ErrorWord.X8 (SWLimit) An alarm is pending, that a software limit switch was
<TO>.PositonLimits_SW.Active Enables / disables the monitoring of the software
<TO>.PositonLimits_SW.MinPosition
Position of the negative software limit switch
<TO>.PositonLimits_SW.MaxPosition
Position of the positive software limit switch
The following technology object tags are relevant for hardware limit switches:
<TO>.StatusWord.X17 (HWLimitMinActive)
Negative hardware limit switch is enabled
<TO>.StatusWord.X18 (HWLimitMaxActive)
Positive hardware limit switch is enabled
<TO>.ErrorWord.X9 (HWLimit) An alarm is queued; a hardware limit switch was
violated
<TO>.PositonLimits_HW.Active Enables / disables the monitoring of the hardware
limit switches
<TO>.PositonLimits_HW.MinSwitchLevel Level selection for enablement of the lower hard-
ware limit switch:
FALSE: At low level, the signal is enabled
TRUE: At high level, the signal is enabled
<TO>.PositonLimits_HW.MinSwitchAddress Byte number of the I/O address of the hardware limit
switch for the lower or minimum position
<TO>.PositonLimits_HW.MinSwitchBitNumber Bit number of the I/O address of the hardware limit
switch for the lower or minimum position
<TO>.PositonLimits_HW.MaxSwitchLevel Level selection for enablement of the upper hard-
ware limit switch:
FALSE: At low level, the signal is enabled
TRUE: At high level, the signal is enabled
<TO>.PositonLimits_HW.MaxSwitchAddress Byte number of the I/O address of the hardware limit
switch for the upper or maximum position
<TO>.PositonLimits_HW.MaxSwitchBitNumber Bit number of the I/O address of the hardware limit
switch for the upper or maximum position
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