Mitsubishi FX3U-64CCL, User Manual

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7 Buffer Memory
7.2 Buffer memory details
37
FX
3U
-64CCL User's Manual
1
Introduc
tion
2
Specifi
cation
and func
tion
3
Sy
stem
Configurati
on
4
Ins
tal
lation
5
W
iri
ng, S
tart-up
proced
ure
6
FX
3U
-64C
CL
settin
g (swi
tch
settin
g)
7
Buf
fer
M
emor
y
8
Program Ex
ampl
e
9
Troubl
es
hooti
ng
A
Ve
rs
ion
Inform
ation
7.2.4 [BFM#25] Communication status
This buffer memory address stores the communication status of CC-Link communication data as ON/OFF
information of in bits 0 to 15.
The information on the master station PLC is valid only while communication is executed in the link.
*1. When "Link execution (bit 7)" is OFF, the "Master PLC RUN status (bit 8)", "Master PLC error status
(bit 9)" and "Refresh (bit 10)" bits hold their final values from the link execution.
7.2.5 [BFM#26] CC-Link model code
The CC-Link model code is stored as follows:
BFM#25 Communication status
bit Description Explanation
0 CRC error
Information for the
64CCL
0: The receive data does not have a CRC error.
1: The receive data has a CRC error
This bit turns ON when there is a discrepancy with the CRC value due
to unwanted noise or other disruptions affecting the transmission
path.
1 Timeout error
0: Normal
1: Timeout error
This error occurs when the next refresh is not given during the
execution of a current refresh.
This bit turns ON when the transmission data send time exceeds the
fixed time for normal reception completion.
The line may be shut down, the system may go down,
or the power may be turned OFF.
2 Reserved 0 (Not used)
3 Reserved 0 (Not used)
4 Reserved 0 (Not used)
5 Reserved 0 (Not used)
6 Reserved 0 (Not used)
7
Link execution
*1
0: Link non-execution
1: Link execution ( L RUN is ON )
This bit is ON during data link with the master station.
8
Master PLC RUN status
*1
Information for the
master station
0: During STOP
1: During RUN
This bit is ON when the PLC connected to the master station is in
RUN mode. This bit operates only during normal data link operation.
9
Master PLC error status
*1
0: Normal
1: Abnormal
This bit turns ON when the PLC connected to the master station has
an error. The status is only valid when the master station CPU's
designated operation condition is shown as "resuming". This bit
operates only during normal data link operation. For details, refer to
the master unit manual.
10
Refresh
*1
0: With no refresh
1: With refresh
This bit operates only during normal data link operation.
11 Reserved 0 (Not used)
12 Reserved 0 (Not used)
14 13 Protocol version
The CC-Link protocol version is stored.
00: Ver.1
01: Ver.2
15 Reserved 0 (Not used)
BFM#26 CC-Link model code
bit15 to 8 bit7 to 0
CC-Link coded identification (PLC type)
H01 CC-Link software version
H01