Calculating The Total Link Device Refresh Time; Setting A Temporary Link Device Refresh Cycle; Test Run Of The C Controller System; Checking The C Controller System Operation - Mitsubishi Electric Q12DCCPU-V User Manual

5
ACCESS VIA NETWORK MODULES
5
- 24 5.3 MELSECNET/H Module Access Function
5.3.4 Link device refresh setting

1) Calculating the total link device refresh time

Calculate the total link device refresh time.
( Page 5-32, Section 5.3.5 (2))

2) Setting a temporary link device refresh cycle

The link device refresh cycle value and the total link device refresh time value
obtained in 1) must satisfy the following relational expression.
Set a temporary value for the link device refresh cycle so that the expression is
satisfied.
[Relational expression]
Total link device refresh time < Link device refresh cycle
* 1 When the C Controller module (own station) controls a MELSECNET/H module and a CC-Link IE
controller network module, the following expression must be also satisfied, in consideration of the
total link device refresh time for the MELSECNET/H and CC-Link IE controller networks.
[Relational expression]
(TLDRT + TLDRT
MNETH
TLDRT : Total link device refresh time for MELSECNET/H
MNETH
TLDRT : Total link device refresh time for CC-Link IE controller network
CC-Link IE Control

3) Test run of the C Controller system

Perform the test run of the C Controller system to check if the system will
operate properly with the link device refresh cycle that is temporarily set in 2).

4) Checking the C Controller system operation

In the test run of the C Controller system using the temporary link device
refresh cycle setting, check the following 1 and 2.
[Check 1: Check for an error in the C Controller module.]
Check if any error has occurred in the C Controller module.
If the link device refresh is not completed within the specified link device
refresh cycle, a "Link device refresh timeout error (error code: 5012,
LNKREF.TIME OVER)" occurs in the C Controller module.
For this error, take corrective actions according to 5).
) < Link device refresh cycle
CC-Link IE Control
*1