Sending Commands From A Pc; Communications Specifications - Omron CJ1W-ETN11 Operation Manual

Sending Commands From a PC

5-3

Sending Commands From a PC

5-3-1

Communications Specifications

Item
Destination
Data length
Data contents
Communications port num-
ber
Response monitor time
Number of retries
PC Communications Data
Areas
FINS commands can be sent from the user's ladder-diagram program in the
PC by using the SEND(090), RECV(098), and CMND(490) instructions.
SEND(090): Writes I/O data from the local node to another node.
RECV(098): Reads I/O data from another node to the local node.
CMND(490): Issues FINS commands for controlling operations such as send-
ing and receiving I/O memory data to and from other nodes, reading informa-
tion regarding other nodes, and so on.
The following table shows the specifications for PC communications using the
SEND(090), RECV(098), and CMND(490) instructions.
1:1 SEND(090), RECV(098), CMND(490) instructions
1:N SEND(090), CMND(490) instructions (broadcasting)
SEND(090): 990 words (1,980 bytes) max.; broadcasting: 727 words (1,454 bytes)
RECV(098): 990 words (1,980 bytes) max.
CMND(490): 1,990 bytes max.; broadcasting: 1,462 bytes (after FINS command code)
The following data is sent and received with the execution of each instruction.
SEND(090): Sends request for remote node to receive data, and receives response data.
RECV(098): Sends request for remote node to send data, and receives response data.
CMND(490): Sends any FINS command and receives response data.
Ports 0 to 7 (Eight transmissions can occur simultaneously.)
0000: 2 s (default)
0001 to FFFF: 0.1 to 6,553.5 s in 0.1-s increments (specified by user)
0 to 15 retries
Note 1. The maximum data length is limited to 512 bytes for data exchange be-
tween the PC and SYSMAC LINK Systems or the PC and SYSMAC BUS/
2 Remote I/O Systems.
2. When broadcasting, do not require a response.
The following table shows the I/O data areas involved when SEND(090) and
RECV(098) are used.
CIO Area
Work Area
Holding Area
Auxiliary Area
Timer Area
Counter Area
DM Area
EM Area
Note 1. Data cannot be written to words A000 to A447 in the Auxiliary Area.
2. A maximum of 13 banks in the EM Area can be used. For details regarding
the EM Area, refer to the operation manual for the PC that is used.
Specifications
Area
CIO 0000 to CIO 6143
W000 to W511
H000 to H511
A000 to A959 (See note 1.)
TIM0000 to 4095
CNT0000 to 4095
D00000 to D32767
E00000 to E32767 (See note 2.)
Section 5-3
Range
83