Mitsubishi Electric GT14, Руководство пользователя

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56
CONNECTION T
O
L
S
IN
DUST
R
IA
L
SY
STEMS PLC
57
CONNECTION T
O
SI
CK SAFE
T
Y
CONTROL
LER
58
CONNE
C
T
ION T
O
SI
EME
N
S PLC
59
CON
N
ECT
ION
T
O
HI
RA
TA
C
O
RPOR
AT
ION
HN
C C
O
NT
ROL
LE
R
60
CONNECTION
T
O
MURA
TEC
CONT
ROLLE
R
61
MICROCOMPUTER C
O
NNECTION
(SERI
A
L)
62
MICROCOMPUTER CONNECTION (ETHERNET)
63
MODBUS
(R)/
R
T
U
CONNECTION
61. MICROCOMPUTER CONNECTION (SERIAL)
61.5 Message Formats
61 - 45
61.5.6 Formats 11 to 13 (Digital Electronics Corporation's memory link method)

Basic format of data communication
This is the same format as the protocol of the Digital Electronics Corporation's memory link method.
For details of the basic format of data communication, refer to the following manual:
The connection manual of the device manufactured by Digital Electronics Corporation
This section describes items whose settings differ from the protocols of the Digital Electronics Corporation's memory
link method and dedicated commands for a microcomputer connection of GOT.
Example: Request message for the batch read in word units (R) command in format 13 (Digital Electronics
Corporation's memory link method (extended mode, ASCII code 1:n))

Details of data items in message format
POINT POINT POINT
Data code during communication
Communication is performed in ASCII code.
(1) Command
Specifies the contents to access from the host to GOT.
The command is converted to a 1-digit ASCII code (Hex) and transmitted.
For details of the commands that can be used, refer to the following.
61.5.2 List of commands
(2) Station No.
Station No. is used to identify the GOT with which the host communicates. (Setting range: 0 to 1F
H
)
The address notated in hexadecimal is converted to a 2-digit ASCII code (Hex) and transmitted from the upper
digit.
The GOT processes only commands whose station No. matches the "Host Address (0 to 31)" set at
"Communication Detail Settings". (The message of command whose station No. does not match is ignored.)
For setting method of "Communication Detail Settings", refer to the following.
61.6.2 Communication detail settings
(3) Address
Specifies the head No. of the device data to be read/written.
The address notated in hexadecimal is converted to a 4-digit ASCII code (Hex) and transmitted from the upper
digit.
For details of the device range that can be accessed, refer to the following.
61.4 Device Data Area
Sum check is performed in this range.
05
H
ENQ
(H) (L)
5 E
35
H
45
H
Sum
Check
(H) (L)
Station No.
0
30
H
0
30
H
(H) –
Address
0
30
H
4
34
H
– (L)
0
30
H
6
36
H
(H) –
Number of points
0
30
H
0
30
H
– (L)
0
30
H
2
32
H
1B
H
ESC
52
H
R
0D
H
CR
0A
H
LF
Com-
mand