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11
6. RS-232C Interface
6-1
RS-232C specifications
■
Connector (D-Sub9 pin, male)
⋆1.
When connected to specific weighing device such as AD-4212C / AD-4212D, Weighing device can be
operated by supplying power from the AD-8552 EIP.(Refer to “3-2
Applicable models”)
■
Communication specifications
Item
Setting
Baud rate
[SW-3, 4
No.1 to 4
]
2400*, 9600, 19200, 38400bps
Data bit
7 bit (fixed)
Parity
EVEN (fixed)
Stop bit
1 bit (fixed)
Terminator
<CR><LF> (fixed)
Code
ASCII
*Factory setting
6-2
Connecting cable
Connect with a cable applicable to the individual weighing device. Refer to “3-2. Applicable models”.
■
Connection diagram
(
When connected to a weighing device.
)
*
1.
Depending on the weighing device, RXD and TXD may be shown on the opposite side (weighing device
output: RXD, weighing device input: TXD)
*
2.
May vary depending on the weighing device.
Pin No.
Signal
Direction
Description
1
(Vs)
Output
Output of power supply 0V
⋆1
2
RXD
Input
Input data
3
TXD
Output
Output data
4
-
-
N.C.
5
SG
-
Signal ground
6
-
-
N.C.
7
-
-
N.C.
8
-
-
N.C.
9
(Va)
Output
Output of power supply 12V
⋆1
Shell
-
-
Shield
Inch screw#4-40UNC
1
2
3
4
5
6
7
8
9
Shell
Shield
Weighing
device
(
DCE
)
TXD
*
1
RXD
*
1
SG
AD-8552EIP
(
DTE
)
RXD
TXD
SG
FG
FG
2
3
5
(Vs)
*
2
1
(Vs)
(Va)
*
2
9
(Va)