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MELSEC-Q
3 SPECIFICATIONS
POINT
For the specifications of Q3 RB/Q6 RB Redundant power supply base unit and
Q6
RP redundant power supply module, refer to QCPU User's Manual (Hardware
Design, Maintenance and Inspection).
(a) Modules needed to configure a redundant power supply in a remote I/O
station
To configure a redundant power supply in a remote I/O station, use the
modules shown below.
1) Main base unit: Q3
RB
2) Extension base unit: Q6
RB
3) Power supply module: Q6
RP
4) Remote I/O module: QJ72LP25-25, QJ72LP25G, QJ72LP25GE,
and QJ72BR15 (function version D)
(b) Link special register used for configuring a redundant power supply
The remote master station can confirm the status of the power supplies of
remote I/O stations using the link special registers listed below.
If either of the power supplies stops supplying power, the remote I/O station
detects error code 1510 "SINGLE PS DOWN" or 1520 "SINGLE PS
ERROR" (moderate error).
No. Name Description
Availability
Control station Normal station
Remote
master station
Remote I/O
station
Optical Coaxial Optical Coaxial Optical Coaxial Optical Coaxial
1
SW0088
•
SW0089
•
SW008A
•
SW008B
Operation
status of each
station CPU (2)
The CPU status of each station is stored (including the host).
Only normal stations out of SW0070 to 0073 are effective.
0: normal (including the maximum station No. or later and reserved
stations)
1: minor error
16
32
48
64
15
14
13 5
4
3
21
31 30
47 46
63 62
29
45
61
21 20 19 18 17
37 36 35
34
33
53 52 51 50 49
to
to
to
to
b15b14b13b12 b4b3b2b1b0
SW0088
SW0089
SW008A
SW008B
In the table, 1 to 64 indicate station No.
to
1: Effective only when SB0047 is OFF. When this signal is turned ON (error), the data just before ON are held.
The link special register stores minor errors caused by the factors below in
addition to power supply disconnection.
• When an error specified as "Continue" in the "operation mode under error
condition" in the PC RAS settings of parameters (fuse blown or module
verification error) occurs