Mitsubishi Electric MELSEC iQ-R Series User Manual page 285

No. Name Description
SD228 Multiple CPU Number of CPU
system information modules
SD229 CPU module
number in multiple
CPU system
SD230 CPU No.1 operating
status
SD231 CPU No.2 operating
status
SD232 CPU No.3 operating
status
SD233 CPU No.4 operating
status
SD241 Number of 0: Main base unit
extension base only
units 1 to 7: Number of
extension base
units
SD242 Determination of Identification of the
mountability of base type
MELSEC-Q series 0: MELSEC-Q
module series module is not
mountable. (There
is no base unit on
which MELSEC-Q
series module can
be mounted.)
1: MELSEC-Q
series module is
mountable. (There
is a base unit on
which MELSEC-Q
series module can
be mounted.)
Details
The number of CPU modules in the multiple CPU system is stored (one to
four, including empty CPU).
The host station CPU number is stored when a multiple CPU system is
configured.
• CPU No.1: 1
• CPU No.2: 2
• CPU No.3: 3
• CPU No.4: 4
The operation information for each CPU number is stored. (Information
for a number of multiple CPUs which is indicated in SD228 is stored.)
b15 b14 ~ b8 b7 b6
(4) (3)
(1) The operating status is stored in b0 to b3.
• 0: RUN
• 2: STOP
• 3: PAUSE
• 4: Initial
• FH: Reset
(2) The classification is stored in b4 and b5. However, minor or moderate
errors will be those set in the CPU parameter RAS settings, system
parameter I/O assignment settings, and multiple CPU settings.
• 0: Normal
• 1: Minor error
• 2: Moderate error
• 3: Major error
(3) The stop error flag is stored in b7.
• 0: No stop error
• 1: Stop error
(4) The mounting status of the CPU module is stored in b15.
• 0: Not mounted
• 1: Mounted
■When the target CPU is this product
Replace terms with other terms as shown below:
• Operating status  Y output status
• RUNY OUT
• STOPY STOP
• Initializing  Initializing the bus control
• Reset  Bus reset
The maximum number of the mounted extension base units is stored.
Whether or not MELSEC-Q series module can be mounted is determined.
When no module is mounted, the value is fixed to 0.
b15 b8 b7
(5)
(1) Main base unit (fixed to 0)
(2) Extension base unit, level 1 (MELSEC-Q series modules are
mountable.)
(3) Extension base unit, level 2 (MELSEC-Q series modules are
mountable.)
(4) Extension base unit, level 3 to 7 (MELSEC-Q series modules are
mountable.)
(5) Fixed to 0
b5 b4 b3 ~ b0
(2) (1)
b3 b2 b1 b0
(4) (3) (2) (1)
Appendix 5 Special Register List
Set by (when to set)
S (initial)
S (initial)
S (error occurrence)
A
S (initial)
S (initial)
APPX
283