Outline; Specifying Destination Nodes; Communications Specifications - Omron SYSMAC C200HW-PCU01 Operation Manual

Outline

8-1

Outline

8-1-1 Specifying Destination Nodes

Node-to-node Data Transfer
Broadcasting

8-1-2 Communications Specifications

106
The SEND(90) and RECV(98) instructions are used in the PC user program to
send data from a PC to other nodes, such as PCs or computers.
Either of the following two communications modes is used depending on how
destination nodes are specified:
Data can be transferred between the local node and the destination node by
specifying the node address in the control data of the SEND(90) and RECV(98)
instructions.
Send data
Receive data
Node 1 Node 2
The same data can be sent to all nodes on the network by specifying 00 as the
node address of the destination node. In this case, no response is received from
the nodes. (Broadcasting is not applicable to RECV(98).)
Broadcast data
Node 1 Node 2
PC communications are based on the following specifications:
Item
Direction of 1:1
transmission
1:N
Data length SEND(90):
RECV(98) :
Data contents The following data is sent or received when each instruction is
executed:
SEND(90): Data transmission request and response data
RECV(98): Data reception request and response data
Response 00:
monitoring time
01 to FF: User setting (approx. 0.1 to 25.5 seconds in 0.1 s
No. of retries 0 to F:
UDP Port No. 9600 is used for SEND/RECV.
Node 3 Node 4
Node 3 Node 4
Specifications
SEND(90) and RECV(98) instructions
SEND(90) instruction (broadcast mode, no response,
N = 127 or less)
1,000 words max. (2,000 bytes) (727 words
when data is broadcast or sent to local node)
1,000 words max. (2,000 bytes)
Default (2.2 seconds)
increments)
0 to 15 times
Section 8-1
Node 5
Node 5