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Scale Ready MS2421/MS2431 Models – Additional Pinout Connections
There are four additional 10-pin modular jacks located on the bottom of the of the MS2421/MS2431
scanner models that may be used for an integrated scale application and the use of a remote display.
Note: Please keep in mind that every application is unique. The use of these connections depends on the
specifications of the scale’s manufacturer. The following pinouts are for reference only. If the
scanner has been integrated with a scale, refer to the Scale Addendum for detailed instructions on
the appropriate cable connections, communication specifications and calibration procedures
required by the scale manufacturer and local Weights and Measures authorities. When
connecting any combination of scale/external scale display to the MS2421/MS2431 do not
exceed the following current restrictions: 12V @ 0.7A max. / 5V @ 0.2A max.
Figure 40. Scale Ready Connector Layout
Scale Display
Data In Scale
Data to Display
from the Load
Cell Interface
Scale Data In
RS232 from the Load
Cell Interface
Scale RS232 to Host
Scale Data, Dual Cable
Applications
Scale to Display
Pin Function **
Pin Function**
Pin Function** Pin Function**
1
SIG1
1
12V
1
Ground
1
SIG1
2
SIG2
2
Ground
2
Scale RS232 TX Out
2
SIG2
3
SIG3
3
5V
3
Scale RS232 RX In
3
SIG3
4 SIG4
4 Ground
4 Scale RS232 RTS Out
4 SIG4
5
SIG5
5
RS232 TX In
5
Scale RS232 CTS In
5
SIG5
6
SIG6
6
RS232 RX Out
6
No Connect
6
SIG6
7
SIG7
††
7
RS232 CTS In
7
No Connect
7
SIG7
8
††
SIG8
††
8 RS232 RTS Out
8 No Connect
8 SIG8
9
††
SIG9
††
9
Scale Status, TTL
9
No Connect
9
SIG9
10
††
SIG10
††
10
Scale Zero, TTL
10
Shield
10
SIG10
** All signals are referenced from the MS2421/MS2431 scanner.
††
††
Specifications are subject to change without notice.
The use of these pins depends upon the specifications of the scale’s manufacturer.