KEYENCE DV-90 User Manual

Page 236

9-36

E DV-90-IM

PLC Link

Check that the values to be written in +01, +02, and +03 are within the range supported by the DV-

90 and the PLC. (

Refer to 9-3.)

Note that the range of values written in +01, +02, and +03 +50 is used, and therefore should be sup-
ported by the DV-90 and the PLC.

Check the connections, settings, and range of DMs, and perform the steps again starting from Step
2.

➆When PLC link communication is correctly established but the data is not written correctly, check

the following points.

• Write “1” in the DM (Communication Start Notice Flag) of the “DM Address” set in the DV-90

+00, and check whether or not communication has started. (

Refer to 9-4.)

• Communication will not start unless “1” is written in “Communication Start Notice Flag”.

• Indirectly specify the head address in which the read data of the code reader is written as the DMs

(Data Write Head Address) of the “DM Address” +01, +02, and +03.

(

Refer to page 9-7.) Check that the correct address is specified as the “data write head

address”.

• When the DM “Data Write Process Notice Area” of “DM Address” +08 is set to “1 (Sequence

processing)”, check whether or not the DM “Data Write Enabled Notice Flag” of the “DM

Address” +10 is set to “0 (Data Write Disabled)”.(

Refer to 9-10.)

In sequence processing, the read data is not written unless “Data Write Enabled Notice Flag” of
+10 DM is set to “1 (Data Write Enabled)”.

➇When the screen to the right appears when using Ver-

ify Active, the selected active record number is not in
the range between 1 and 900. Be sure to set the cor-

rect value. (

Refer to page 9-11)

Note

• If performing communication as a test, set the “DM Address” to “0000”, and write “100” in

DM0001, “200” in DM0002, and “300” in DM0003. Then, check that the read data is writ-
ten in DM100, DM200, and DM300.

• “PLC Link Error Invalid DM” that occurs at step 2 occurs when the values to write in +01,

+02, and +03 are not in the range between 1 and 9999. Note that the range supported by
the PLC is not considered.

Note

• Be sure to restart the PLC after you send settings to it.

P L C L i n k E r r o r

A c t i v e N o [ E S C ]