Communication Type Of Protocols - Mitsubishi Melsec-L Series User Manual

9.2 Communication Type of Protocols

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Send packets to other devices and receive packets from other devices at the time of
process execution are registered in a protocol.
The following shows an example of a packet configuration. For details of packet
elements, refer to Section 9.3.
Length of
Command
read data
Maximum length: 2048 bytes
The predefined protocol function communicates with other devices using the following
procedures (communication types). For the operation image of each communication
type, refer to Appendix 5.
Communication
type name
Send only
Receive only
Send & receive
9 DATA COMMUNICATION USING THE PREDEFINED PROTOCOL
Data division
Read data
Sends a send packet once. One send packet is required.
Receives a packet if it matches any of up to 16 defined receive
packets. One or more receive packets are required.
Sends a send packet, and then receives a packet if it matches any of
up to 16 defined receive packets. One send packet and one or more
receive packets are required.
Check code
Description
Terminator
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