Mitsubishi FX2N-16CCL-M, User Manual

Page: 46 / 194

FX2N-16CCL-M CC-Link System Master Block Specification 4
4-12
4.6.3 I/O signals to PLC
This section describes I/O signals used to control the master block.
The signals used to control the master block are assigned to the buffer memory (BFM#A
H
and
BFM#B
H
) built in the FX
2N
-16CCL-M.
The buffer memory of the same number works differently between the time of read (when the
FROM instruction is used) and the time of write (when the TO instruction is used) as shown in
the table below.
The system automatically changes over these functions in accordance with the instruction
(FROM or TO).
The table below shows also the assignment of I/O numbers adopted in the A/QnA/Q Series
master module as reference. These I/O numbers are available only in the A/QnA/Q Series, and
are not available in the CC-Link system for the FX Series. When making a program, make sure
to specify bits of the buffer memory.
Table 4.8:
PLC
←
Master block
Read (when FROM instruction is used)
BFM
number
Read
bit
Input signal name
Reference: Input number
in A/QnA/Q Series
BFM
#A
H
(#10)
b0 Module error Xn0
b1 Data link status in host station Xn1
b2 Parameter setting status Xn2
b3 Data link status in other stations Xn3
b4 Module reset acceptance completion Xn4
b5 (Prohibited to use) Xn5
b6
Normal completion of data link startup by buffer
memory parameters
Xn6
b7
Abnormal completion of data link startup by buffer
memory parameters
Xn7
b8
Normal completion of data link startup by EEPROM
parameters
Xn8
b9
Abnormal completion of data link startup by
EEPROM parameters
Xn9
b10
Normal completion of parameter registration to
EEPROM
XnA
b11
Abnormal completion of parameter registration to
EEPROM
XnB
b12
(Prohibited to use)
XnC
b13 XnD
b14 XnE
b15 Module ready XnF