Mitsubishi MELSEC Q Series Programming Manual page 1206

Number Name
SD5
SD6
SD7
SD8
SD9
SD10
SD11
SD12
SD13
SD14
Error common Error common
information information
SD15
App-198
Meaning
• This register stores common information corresponding to the
error code stored in SD0.
• The following ten types of information are stored here:
• The error common information type can be determined by
"common information category code" stored in SD4. (Values
stored in "common information category code" correspond to
the following 1) to 8).)
1) Module No.
Number
SD5 Slot No./CPU No./Base No.
SD6
SD7
SD8
SD9
SD10
SD11
SD12
SD13
SD14
SD15
*1 For a multiple CPU system, the module No. or CPU No. is
stored according to an error. (To determine whether a
storage value is a module No. or CPU No., refer to each
error code.)
CPU No. 1: 1, CPU No. 2: 2, CPU No. 3: 3, CPU No. 4: 4
*2 If a fuse has been blown or an I/O module verification error
occurs in a module on the MELSECNET/H remote I/O
station, the network No. is stored in the upper 8 bits and the
station No. is stored in the lower 8 bits. To determine a fuse-
blown module or a module where an I/O module verification
error occurs, check the I/O No.
*3: If an instruction is executed to the Basic model QCPU on the
slot where the module cannot be mounted, "255" is stored in
SD5.
*4 The definitions of the base No. and slot No. are as follows:
[Base No.]
This number indicates a base unit on which the CPU module
is mounted.
Base No.
Indicates the main base unit where a CPU module
0
is mounted.
1 to 7 Indicates the extension base unit. The stage number
setting made by the stage number setting connector
on the extension base unit is the base No.
When stage number setting is extension 1: Base No. = 1
When stage number setting is extension 7: Base No. = 7
[Slot No.]
This number is used to identify the slot No. of a module
where an error occurs. The "0" I/O slot (slot on the right of
the CPU slot) on the main base unit is defined as "Slot No. =
0". The slot Nos. are assigned in sequence numbers in order
of the main base unit and then the first extension base unit to
7th extension base unit. When the number of slots on base
units has been set in the I/O assignment tab of the PLC
Parameter dialog box, the slot Nos. are assigned by the
number of set slots.
*5 If a module is not mounted on any slots as set, FF
*6 If FFFF is stored in SD6 (I/O No.), this indicates that the I/O
H
No. cannot be identified due to such as overlap of an I/O No.
in the I/O assignment setting of the PLC Parameter dialog
box. In this case, identify the error location using SD5.
Explanation
Meaning
1, 2, 3, 4, 5
I/O No. 6
(Empty)
Definition
is stored.
H
(To the next page)
Corres-
Corres-
ponding
Set by
ponding
ACPU
(When Set)
D9
S
New
(Error)
CPU
QCPU
LCPU