Panasonic FP7 Series Command Reference Manual

(Note 2) It occurs when the communication control I/O relays corresponding to the communication port (master
communication clear to send flag, master communication send active flag, master communication
send done result relay)are not allocated as I/O words of the CPU unit in the I/O map. It occurs only
when the number of user connections of ET-LAN is expanded and this instruction is executed
specifying the expanded connections.
(Note 3) For details of the execution result codes that may be set if a communication error occurs, refer to "Exit
codes when communication error occurs""P.17-200".
■
Sample program
● An MC protocol command (bulk write) is sent from the LAN port of the CPU unit, and the
contents of the data registers DT300 to DT301 of FP7 are written to the addresses D000100
to D000101 of an external device.
● After it is confirmed that connection 1 is established in master mode (X90) and no
transmissions are currently being executed for the same port (Y90), the SEND instruction is
started.
● The UNITSEL instruction is used to specify a slot number (LAN port: U100) and the
connection number (U1).
● The SEND instruction is executed with the address (DT300) and the number of data (U2) of
FP7, the code (H50) that indicates the device type and the upper address of the partner
unite, and the lower address (H64=100) of the partner unit.
● It is possible to check if a send error occurs by the sent flag (Y70) when the sending flag
(Y90) turns OFF.
R0
R100
UNITSEL U100 U1
SEND.US DT0H500 H64DT300 U2
R100
SEND
execution relay
Communication port settings
S1: CPU LAN port (U100)
S2: Connection 1 (U1)
SEND execution conditions
Clear to send flag: ON
Send active flag: OFF
SEND instruction execution
S: Header for sent data (DT300)
n: Amount of sent data (U2)
D1: MC device type (H5)
MC upper address (H00)
D2: MC lower address (H64)
D3: Execution result code (DT0)
Master
communication
clear to send flag
X90 Y90
Master
communication
send active flag
( )DF
S1 S2
S n D1 D2 D3
Y90 R101
Send result
hold relay
( )DF/
Send active flag
< >
SET
Send result flag
ON in abnormal state/OFF in normal state
Y70
(Note 1) The above program example holds the send result hold relay (R101). Insert a program that resets the
relay after the relay is checked.
17.39 SEND (MC Protocol Master)
17-198 WUME-FP7CPUPGR-12

Panasonic FP7 Series Specifications

General

Brand	Panasonic
Model	FP7 Series
Category	Controller
Language	English