Communication Module DVPSCM12/52-SL
DVP-PLC Operation Manual
27
O2. The registers in the PLC include the data registers and “Base+Offset”.
Register Definition Register Definition
D Internal D register in the PLC Base+Offset
It is used with the control
register.
I1
It is used to receive/send the
data through COM1.
O1
It is used to send the data
through COM1.
I2
It is used to receive/send the
data through COM2.
O2
It is used to send the data
through COM2.
z Length
Class: The length segment can be either 1 byte or 2 bytes.
Format: The format of the length segment can be the hexadecimal value or the ASCII data.
Value: The user can enter the length value according to the format setting.
z Checksum
Class: The user can choose the class of the checksum segment.
Format: The user can choose the format of the checksum segment.
Initial Value: The user can set the initial value of the checksum.
Reverse: Reverse the checksum (word) in bytes.
6.3.2 Command
After creating many TX packets and RX packets, the user can choose the packets to be sent and received
through creating the commands, and plan the sequence of executing the commands.
Command No.: Each command has its own number. The user can designate the sequence of executing
the commands through these numbers.
Command Type: The user can choose “Send”, “Receive”, or “Send & Receive”.
Send Packet: The user can choose the group name which has been created in the groups.
Receive Packet: The user can choose the group name which has been created in the groups.
Success: Designate the action following the execution of a command. The user can choose “Next”, ”Goto”,
or “End”.
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