Siemens Simatic S7 Series System Manual

Open loop motion control
12.7 Using the AXISx_ABSPOS subroutine to read the absolute position from a SINAMICS servo drive
S7-200 SMART
524 System Manual, 09/2015, A5E03822230-AC
Network 2:
When the operation is
done, capture the error
code and also capture
the servo position, if no
error.
LD V600.0
LPS
AB= VB601, 0
MOVD VD602,
VD800
= M0.1
LPP
MOVB VB601, VB804
Network 3:
Update the current
position in this Axis of
Motion with the cap-
tured servo position
value.
LD SM0.0
= L60.0
LD M0.1
EU
= L63.7
LD L60.0
CALL AXIS0_LDPOS,
L63.7, VD800,
V610.0, VB611,
VD612
12.7.2
Interconnections
Digital I/O
Refer to the section "Connection examples with PLCs" in the SINAMICS V90 /
SIMOTICS S-1FL6 Operating Instructions
document to find wiring diagrams for connection of
the suggested digital control signals between an S7-200 SMART CPU and a V90 servo
drive.
Communications
The AXISx_ABSPOS subroutine obtains the position data from the drive using serial
communications on the RS485 link between the two devices. Therefore, connect a cable
between the RS485 port on the S7-200 SMART CPU (or optionally the S7-200 SMART
CM01 signal board) and the RS485 port on the V90 servo drive.
Refer to the appropriate sections of the
S7-200 SMART System Manual and the
SINAMICS V90 / SIMOTICS S-1FL6 Operating Instructions documents for descriptions of
the RS485 ports on the S7-200 SMART CPU and V90 servo drive.

Siemens Simatic S7 Series Specifications

General

CPU	Varies by model (e.g., S7-300, S7-400, S7-1200, S7-1500)
Communication Interfaces	PROFIBUS, PROFINET, Ethernet, MPI
Programming	TIA Portal, STEP 7
Programming Languages	LAD, FBD, STL, SCL, GRAPH
I/O Modules	Digital, Analog, Specialty modules available
Operating Temperature	0°C to 60°C (standard models)
Mounting	DIN rail mounting
Operating Voltage	24V DC or 120/230V AC (varies by model)
Protection Class	IP20 (standard models)
Memory	Varies depending on the S7 model. Includes work memory (RAM) for program execution, load memory (EEPROM or Flash) for program storage, and system memory for operating system functions. Memory sizes range from kilobytes to megabytes.