KEYENCE DL-RS1A - Manual (Page 15)

13
Parameters of Commands and Responses
When the specified data is "006":
"6" converted to binary number is "0110".
Therefore, the setting of the amplifier to which the data is written is "NPN output" and "Analog
output 1 to 5 V".
*8 If data is written to an expansion unit, a communication error (error number: 22) will occur. This
is enabled when "Analog output scaling" is set to "Free range."
*9 To reflect the setting written for the data number 146 to 149 to the sensor amplifier, write 1 (user
setting) for the data number 145 or set the external input setting to "User setting" with the button
operation on the sensor amplifier.
„ Relation between the data number 001 to 006 (data requesting the sensor
amplifier operation) and the data number 053 to 056 (data presenting the result
of request/execution)
When writing the data number 001 to 006 (data requesting the sensor amplifier operation), read the
data number 053 to 056 (data presenting the result of request/execution) and check that the request
is correctly reflected (1: Normal termination is read or the system parameter status is now the set
value.). If the request is not correctly reflected and abnormal termination occurs, data other than 1:
Normal termination may be read by reading the data number 053 to 056. Thus, the request may not
be reflected to the sensor amplifier.
When 0 → 1 is written for the data number 001 to 006, the previous state of the data number 053 to
056 is cleared and the condition is updated. The data number 053 to 056 holds the result until 0 → 1
is written for the next data number 001 to 006.
Data numbers
• The data number 054 (Zero shift/zero shift reset execution result) holds the result of
writing which either the data number 001 (Zero shift reset execution request) or data
number 002 (Zero shift execution request) performed last.
• The data number 053 (EEPROM writing result) holds "0: Writing" for 2 seconds after the
contents written onto the nonvolatile memory (EEPROM) using the writing commands
(SW, AW) are sent last. If writing starts after 2 seconds and finishes normally, 1: Normal
termination results.
If the writing commands (SW, AW) are continuously sent every second, 0:
Writing is held for 2 seconds. After the last writing commands (SW, AW) are
sent, 0: Writing is held for 2 seconds, writing is performed after 2 seconds and
1: Normal termination results.
However, when the initial reset is performed for the data number 005 (Initial reset
request), writing starts immediately. If all the parameters can be saved on the nonvolatile
memory (EEPROM) after approx. 3 seconds, 1: Normal termination results.
• Writing for data No. 001 (Zero shift execution request) and data No. 002 (Zero shift reset
execution request) begins immediately if the "zero shift status save" function is ON.
Reference
Bit 3, 2, 1: 1 to 5 V Bit 0: NPN output
Example
Example
Parameters of Commands and Responses
„ Error numbers
The following table lists the error numbers that are returned as error responses when errors occur in
the communication with the SK-1000 Series.
Each error number is identified with two digits (ASCII characters).
The commands are only sent and received when a response is returned from DL-RS1A to the
external device within 1 sec.
Take the appropriate action to resolve the problem by referring to "Troubleshooting" (page 19).
Error
number
Error name Problem Action
00
Invalid command
error
An invalid command was
received.
Make sure that the external device has
sent a command listed in
"Communication commands" (page 10).
20 Data length error
Data with the correct length was
not received.
Make sure that the external device has sent
either "CR" or "CR + LF" as a data delimiter.
21
Number of
parameters error
The correct number of parameters
for the command was not
received.
Make sure that the number of parameters
and the positions of the commas used as
data delimiters conform to the command
format shown in "Commands and
Responses" (page 7).
22 Parameter error
· A parameter exceeds its range
of value.
· The external device is trying to
write a data type that cannot be
written.
· The external device is trying to
read a data type that cannot be
read.
· The data format is incorrect.
Make sure that the external device is
sending a command listed in
"Communication commands" (page 10).
29 Communication error
An error was detected with
RS-232C communication.
Make sure that DL-RS1A and the external
device have the same communication
settings configured. For information on
configuring DL-RS1A, refer to "(1)
Communication setup switches" (page 2).
65 ID number error
The ID number specified with the
command is incorrect.
Make sure that the sent data specified as
the ID number is a 2-digit number (ASCII
characters) according to the number of
connected units.
66 Expansion line error
The communication could not be
established due to a problem with
an expansion line.
Check that each of the sensor amplifiers
and DL-RS1A are securely and properly
connected by referring to "Connecting
the Unit to Sensor Amplifiers" (page 3).
Make sure that sensor amplifiers that are
supported by DL-RS1A are connected
(refer to page 4).
67 Write control error DL-RS1A is not writable.
Change the read/write setting switch to
the R/W position to enable writing to DL-
RS1A. For information on the read/write
setting switch, refer to "Part Names and
Functions" (page 2).
Point