Communication Start Procedure And Communication Delay Time Setup; Communication Start Procedure - Hitachi SV.LINK User Manual

5 PROGRAMMING
5.5 Communication Start Procedure and Communication Delay Time
Setup

5.5.1 Communication start procedure

This section describes the procedure for starting the SV.LINK module.
SV.LINK cannot be set to start communicating with the MELSEC simply by setting the IP
address and setting the parameters in the BD register. It does not start communicating with the
MELSEC until a value other than "0" is written to the start flag in the module's internal memory.
The start flag is described below:
Module type
Main module
Submodule
When a value other than 0 is written only once to the start flag, the communication starts. After
the communication is started, there is no need to write a value other than 0 to the start flag.
After necessary communication parameters are set in the BD register, be sure to
start communication by writing a value other than 0 to the setting start flag. If
communication is started with undefined parameter values, a parameter error or
abnormal operation results.
Address and description
bit 15
Communication
H873B00
start/stop flag (1 word)
bit 15
Communication
H8F3B00
start/stop flag (1 word)
NOTICE
0
= 0: Stops the communication.
≠ 0: Starts the communication.
0
5-12
Setting
(The value reverts to 0 upon
a reset/power-on reset.)