TCP/IP (PLC is the server)
The device is the client. The connected host acts as the server. The measurement
results and commands are transmitted in binary format.
UDP
The data are transferred via UDP. More information is available on request.
7.2.2
Digital inputs and digital outputs
The digital inputs and digital outputs allow communication with the controller.
The device transmits direction information (up, down, right, left) via the digital outputs.
The automated storage and retrieval system can approach the target position step-by-
step based on this direction information. The device does not transmit any quantitative
information about the difference between the actual position and target position of the
automated storage and retrieval system.
The Ethernet interface transfers the precise difference between the actual position and
target position to the controller using X-values and Y-values. This is how the automated
storage and retrieval system is controlled directly to the target position.
Further topics
•
Control via digital inputs and digital outputs
•
Digital inputs and digital outputs
(Pins)
7.3
Commands from the controller to the device
The commands listed here are used for device control and parameterization.
The functional implementation described below refers to a field with a length of
10 bytes or 11 bytes (2 command bytes, 8 or 9 parameter bytes). If the first byte
(Command_H) equals
<00>
, the device ignores any bytes following the command bytes
since the device is not being parameterized.
Command 1: Switch off continuous measurement: <00> <00>
If a command is sent with the contents
<00><00>
, continuous measurement is
switched off.
Designation
Function
Example
Interpretation
example
Byte 1
Command_H
Command
<00>
Switching off con‐
tinuous measure‐
ment
Byte 2
Command_L
<00>
Command 2: Switch on continuous measurement, Single deep: <00> <01>
If a command is sent with the contents
<00><01>
, continuous measurement is
switched on in single deep mode. The device remains in this mode after switching
on.
Designation
Function
Example
Interpretation
example
Byte 1
Command_H
Command
<00>
Switch on contin‐
uous measure‐
ment
Activate single
deep mode
Byte 2
Command_L
<01>
SPECIFICATION OF THE INTERFACE AND INTERACTION WITH THE CONTROLLER
7
8024534/1DQ8/2022-01-14 | SICK
O P E R A T I N G I N S T R U C T I O N S | InspectorP Rack Fine Positioning
31
Subject to change without notice
