Basics
3.17 Traversing range limitation
S7-1500 Motion Control V13 Update 3
68
Function Manual, 07/2014, A5E03879256-AC
3.17.4
Tags
The following technology object tags are relevant for software limit switches:
Status indicators
<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
violated
Control bits
<TO>.PositonLimits_SW.Active
Enables / disables the monitoring of the software
limit switches
Position values
<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:
Status indicators
<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
Control bits
<TO>.PositonLimits_HW.Active
Enables / disables the monitoring of the hardware
limit switches
Parameter
<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