5 - 6 5 - 6
MELSEC-Q
5 PARAMETER SETTINGS
(5) When parameters have not been set (other than a safety CPU)
For network modules, parameters must be set.
If parameters have not been set, data link will be executed as described below.
(a) Operation
When network parameters have not been set
Item Description
Network type
Data link is executed with the setting as any of the following:
• Normal station in MELSECNET/H mode
• Normal station in MELSECNET/10 mode
Data link is not executed in the following cases:
• No control station exists on the network.
• The control station is in MELSECNET/H Ext. mode. (LINK
PARA ERROR will occur.)
Network No. Network No.1
Group No. 0 (No group)
Station No.
Station No. set with the station number setting switches 1 on the
network module
Mode Mode set with the mode setting switch 1 on the network module
Refresh parameters Refer to the following 2.
1: The QJ71NT11B operates with the station No. and in the mode set by the station number/mode
setting switch.
2: Refresh parameters are assigned as shown below.
Devices and points assigned to one network module
Network module side device LB LW SB SW
Refresh target CPU side devices B W SB SW
Number of network
modules mounted
1 8192 (2048) 8192 (2048) 512 (512) 512 (512)
2 4096 4096 512 512
3 2048 2048 512 512
4 2048 2048 512 512
The values in parentheses are the points applied to the use of the Basic
model QCPU.
The same assignments are given for the cases of three network modules
and four network modules.
(b) Precautions
When B/W points less than the following are set in [Device] parameter [PLC
parameter], set refresh parameters accordingly. Or, increase the B/W
points to the following value or more in [Device].
Number of B/W points refreshed when parameters have not been
set
No. of modules
Device points in [Device]
B W
1 8K points (2K points) 8K points (2K points)
2 8K points 8K points
3 6K points 6K points
4 8K points 8K points
The values in parentheses are the points applied to the use of the Basic
model QCPU.
To Next Page
Loading...
