Mitsubishi Electric GT16, User Manual

Page: 655 / 1306

29. GOT MULTI-DROP CONNECTION
29.5 Setting of Serial Multi-Drop Connection Unit
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ENERG
Y MEAS
UR
ING
UNIT
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ELECT
RIC M
UL
TI-
MEASURING
INSTRU
M
ENT
CO
NNECT
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GO
T
MUL
T
I-
DRO
P
CONNECTION
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MUL
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I-CHA
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L
FUNCT
ION
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F
A
TRANS
P
ARENT
FUNCTION
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CO
NNE
C
TI
ON T
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IA
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ROBOT CON
T
ROLLER
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CONNECTION
T
O
OMRON PLC
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CO
N
N
EC
TI
O
N
T
O
OM
RON
T
E
MPERA
TURE
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ROL
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CONNECTION T
O
KEY
ENCE PLC
5.
If the [Communication with GT01-RS4-M] dialog box
is closed, communication setting contents for GT01-
RS4-M does not remain.
• To maintain the communication setting contents,
click (export).
• To use communication setting contents which are
saved previously, click (import).
■ Exporting/Importing the communication
setting contents

Setting the multi-drop system information
function
When checking the connection status of each GOT
which is connected to GT01-RS4-M on the PLC side,
set the multi-drop system information function.
The GOT connection status is stored in the PLC side
word device.
(1) Setting on the PLC side word device
1.
Select [Use the system information of Multidrop] and
click the [Set] button. The following dialog window is
displayed.
2.
Set the PLC side word device to [Head Device (10
Points)]. In this example, "D0" is set.
(2) Assignment contents of the PLC side word device
The following table shows the device assignment
contents when setting [Head Device (10 Points)] to
"D0".
(3) Details on the word device assignment contents
(a) Control signal 1-1
< 10 second cycle flicker signal
*1
>
By the repetition of turning ON/OFF every 5
seconds, the connection between GT01-RS4-M
and the PLC can be confirmed on the PLC side.
When no repetition of this ON/OFF is observed,
GT01-RS4-M is not connected to the PLC.
*1 When writing or clearing data on the program area from the
personal computer to the PLC using FA transparent function,
flicker of the signal as shown above may be temporarily
stopped.
(b) Station information notification signal
*2
This signal notifies the status of the slave station
(GOT) which is connected to the master station
(GT01-RS4-M). Only the bit corresponding to the
number of connected slave station (GOT) is turned
ON and other bits are turned OFF.
• 1: Connected
• 0: Unconnected (Including communication error
status)
*2 When the communication between GT01-RS4-M and the
PLC becomes faulty, the station information notification
signal is not updated.
Device Description
D0 (Head 0) Control signal 1-1
D1(Head 1) Station information notification signal
D2(Head 2) (Reserve)
D3(Head 3) (Reserve)
D4(Head 4) (Reserve)
D5(Head 5) Slave station control signal
D6(Head 6) (Reserve)
D7(Head 7) (Reserve)
D8(Head 8) (Reserve)
D9(Head 9) (Reserve)
Bit position Description
bit0 10 second cycle flicker signal
bit1 to 15 (Reserve)
bit15 bit14 .................. bit2 bit1 bit0
Station
No. 15
Station
No. 14
..................
Station
No. 2
Station
No. 1
Station
No. 0
OFF
ON
5sec
5sec