KEYENCE DL-RS1A/GT-70A - Manual (Page 12)

10
Commands and Responses
Writing
External devices such as PLC's use the following communication commands to write data to
DL-RS1A.
Attempting to write data with "read-only" attribute results in a communication error and an
error response (error number: 22).
■ Write to the specified sensor amplifier (SW command)
Command
Response
Error response
* The data length is different depending on the data being written.
■ Write to all sensor amplifiers (AW command)
Command
Response
Error response
* The data length is different depending on the data being written.
Point
S W CR LF ID No. Data No. , , Setting data* ,
S W CR LF ID No. Data No. , ,
E R CR LF , S W , Error No.
A W CR LF Data No. , Setting data* ,
A W CR LF Data No. ,
E R CR LF , A W , Error No.
Parameters of Commands and Responses
This section describes the parameters used with various commands and responses.
■ Communication commands
There are two types of communication commands: read commands and write commands.
● Data that can be read with communication commands "M0", "MS", and DRQ input
For information on the data and the calculation function, refer to the manual supplied with
the sensor amplifiers.
■ ID numbers
This parameter is used with communication commands "SR" and "SW". Specify the ID number of the
target sensor amplifier using two digits (ASCII characters).
Example: Sensor amplifier with the ID number 00 = 00, sensor amplifier with the ID number 07 = 07
Communication
command
Attribute Description
SR
Read
Reads the data for the specified data number from the sensor amplifier with the
specified ID number.
M0 Reads the data that DL-RS1A periodically retrieves from all sensor amplifiers.
MS
Reads the control output state and data that DL-RS1A periodically retrieves
from all sensor amplifiers.
DRQ input
Reads all of the control output state and data that DL-RS1A periodically
retrieves from all sensor amplifiers when a DRQ input is received.
SW
Write
Writes setting data for the specified data number into the sensor amplifier with
the specified ID number.
AW Writes setting data for the specified data number into all sensor amplifiers.
Type of amplifier
Calculation
function OFF
Calculation function ON
Other displays
Reference
difference display
Main unit
P.V. values
(comparator values)
R.V. values
(raw values)
R.V. values
(raw values)
Expansion unit
P.V. values
(comparator values)
R.V. values
(raw values)
P.V. values
(comparator values)
Point