Mitsubishi MELSEC Q Series Reference Manual page 101

External device access station
1 External device connection station (local station)
Multidrop connection station from external device
2
connection station
Control station or master station on CC-Link IE
Controller Network, CC-Link IE Field Network,
3 MELSECNET/H, MELSECNET/10 (when the C24 is
installed to the other than control station or master
station.)
Remote master station on MELSECNET/H. (When
4
the C24 is installed to remote I/O station)
Station on CC-Link IE Controller Network,
5
CC-Link IE Field Network
6 Station on MELSECNET/H, MELSECNET/10
Pass through the network module set in "Valid
7
module during other station access"
Multidrop connection station via CC-Link IE
8 Controller Network, CC-Link IE Field Network
connection station
Multidrop connection station via MELSECNET/H,
9
MELSECNET/10 connection station
1 PC number FF can be designated only when (b) Network number is 00
H
2 The network number FE will be disregarded when accessing another station via a C24/E71 loaded on the MELSECNET/H remote I/O station.
H
If the network number FE
H
3 PC number 41 (65) or later can be specified only when the programmable controller CPU of the station where the E71 is installed (local station) is the
H
Universal model QCPU or the LCPU.
3 - 41
3 WHEN COMMUNICATING USING THE QnA COMPATIBLE 3E/3C/4C FRAMES OR 4E FRAME
(c) PC number
1) Data communication in ASCII code
A value within the range shown below is converted to a 2-digit
(hexadecimal) ASCII code and sequentially transmitted beginning from
the most significant digit.
2) Data communication in binary code
The 1-byte value shown below is used for transmission.
3) The following table shows the PC numbers that can be designated
during data communication.
(Network number passed through last)
is specified, the other station specified by the PC number of the MELSECNET/H remote I/O station will be accessed.
POINT
When the on-demand function is used, the programmable controller CPU sends
"FE"/FE as the PC number on the protocol.
H
(d) Request destination module I/O number
1) Data communication in ASCII code
The three higher digits of the four-digit input/output signals of the
objective programmable controller CPU, or 03FF
4-digit ASCII (hexadecimal) code and sequentially transmitted from the
most significant digit.
(Example)
When the programmable controller CPU input/output signals are
0080
is sequentially transmitted from the first "0".
Network number designated by external device
Network number
00
H
00
H
01 to EF (1 to 239)
H H
(Access station network number.)
2
FE (254)
H
01 to EF (1 to 239)
H H
.
H
to 009F ; the request destination module I/O number "0008"
H H
PC number
1
FF
H
1
FF
H
7D : Designated Control station/Master station
H
7E : Current Control station/Master station
H
01 to 78 (1 to 120)
H H
(Access station number)
(Excluding 1, 3 and 4 above)
01 to 40 (1 to 64)
H H
(Access station number)
(Excluding 1, 3, 4 and 5 above)
01 to 78 (1 to 120)
H H
01 to 78 (1 to 120)
H H
(Station number passed through last)
01 to 40 (1 to 64)
H H
(Station number passed through last)
, are converted to a
H
3
3
3
3 - 41