Communication Module DVPSCM12/52-SL
DVP-PLC Operation Manual
26
z Checksum: The user can edit the checksum. One packet includes only one checksum segment.
z Constant: The data is a fixed value.
z Format: The format of the data can be Hex, ASCII, or Code. When the format of the data is Code, it
indicates that the data uses the control code.
z Value: The user can enter the constant value.
z Variable: The data is a variable whose mapping register can be the internal register in the SCM
module or the register in the PLC.
z Format: The user can set the format of the data.
Null: The user does not make any change to the format of the data.
Hex: The ASCII data can be converted into the hexadecimal value. The words which can not be
converted will become zeros.
ASCII: The hexadecimal value can be converted into the ASCII data. The words which can not be
converted will become zeros.
z Variable Property
Function: The variable functions include “Read R ()”, “Write W ()”, and no action “*”. The user can
choose “Read R ()” for TX packets while the user can choose “Read R ()”, “Write W ()”, or no
action “*” for RX packets.
Mapping register: The user can choose the internal register in the SCM12 module or the register in the
MPU of the PLC. The internal registers in the SCM module include I1, I2, O1, and
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