Shimadzu UP1023X, Инструкция по эксплуатации

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Appendices
A-5. RS-232C/Specifications of Connectors
!
Caution
This connector includes an RS-232C signal cable. If using a commercially
purchased RS-232C or other cable, make sure in advance that it is not
connected to any pins other than RS or NC from the application column of
the following tables. If full connection cables or any other cables which
connect to pins other than the RS or NC are used, it could damage the
balance, PC, or other equipment.
Note
NC = not connected inside balance, OC = open collector output
For signals other than RS, use an IFB-RY1 relay output interface (special
accessory).
RS-232C Connector
Pin
No.
Name Function Remarks
1 FG Frame ground
2 TXD Data output
3 RXD Data input
4 RTS
Internal connection
with CTS
5 CTS
Internal connection
with RTS
6 DSR Handshake (receiving)
7 SG Signal grounding
8 NC Blank
9 NC Blank
10 NC Blank
11 NC Blank
12 NC Blank
13 NC Blank
14 NC Blank
15 NC Blank
16 NC Blank
17 NC Blank
18 NC Blank
19 NC Blank
20 DTR Handshake (transmission)
21 NC Blank
22 NC Blank
23 NC Blank
24 NC Blank
25 NC Blank
KEY Connector
(When used for checkweighing output)
Pin
No.
Name Function Remarks
1 GND
Ground of
checkweighing
2 OPERATION Output during
weighing
Checkweighing output is
O.C. (open collector).
(For photo-coupler
drive)
Allowable voltage:
5~24VDC
Allowable current:
0~20mADC
3 STABLE
Output while balance
display is stable.
10 LO LO signal output
11 GO GO signal output
12 HIGH HI signal output
13 ZERO
Output while balance
display is zero
9
9-15
Connect
Make sure to connect
to external device end
when using for
checkweighing.
15
"Pin n" O.C. (+)
"Pin 1" (GND)
Concept of Open Collector Circuit
Balance internal circuit