Mitsubishi Electric Melsec QJ71LP21 Reference Manual page 157

5 PARAMETER SETTINGS
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(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
Network type
Network No.
Group No.
Station No.
Mode
Refresh parameters
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
Refresh target CPU side devices
Number of network
modules mounted
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
1
2
3
4
The values in parentheses are the points applied to the use of the Basic
model QCPU.
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.1
0 (No group)
Station No. set with the station number setting switches
network module
Mode set with the mode setting switch
Refer to the following
LB
B
1 8192 (2048)
2 4096
3 2048
4 2048
B
8K points (2K points)
8K points
6K points
8K points
Description
1 on the network module
2.
LW SB
W SB
8192 (2048) 512 (512)
4096 512
2048 512
2048 512
Device points in [Device]
8K points (2K points)
8K points
6K points
8K points
MELSEC-Q
1 on the
SW
SW
512 (512)
512
512
512
W
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