Siemens SIMATIC S7 System Manual page 671

The following table shows the structure of the SM data area allocated for an Axis of Motion.
The definition uses Axis 0 as an example.
Table 12- 49 Special memory area definition for the Axis of Motion 0
SM address
SMB600 to SMB615
SMB616 to SMB619
SMW620
SMB622
S7-200 SMART
System Manual, V2.3, 07/2017, A5E03822230-AF
Description
Axis name (16 ASCII characters). SMB600 is the first character: "Axis 0"
Reserved
Axis 0: Error code (See "Axis of Motion error codes" (Page 658) list.)
Axis 0: Input/output status: Reflects the status of the inputs and outputs
DIS (Disable outputs):
•
– 0 = No current flow
– 1 = Current flow
TRIG (Stop input):
•
– 0 = No current flow
– 1 = Current flow
STP (Stop input):
•
– 0 = No current flow
– 1 = Current flow
LMT- (Negative travel limit input):
•
– 0 = No current flow
– 1 = Current flow
LMT+ (Positive travel limit input):
•
– 0 = No current flow
– 1 = Current flow
RPS (Reference point switch input):
•
– 0 = No current flow
– 1 = Current flow
ZP (Zero pulse input):
•
– 0 = No current flow
– 1 = Current flow
Open loop motion control
12.10 Advanced topics
671