MSI 4260B, Operator'S Manual, Page: 17 / 64

Introduction 13
1.10 Comm Port
The
MSI-4260
has a single Comm Port allowing access to the embedded ScaleCore
through the Terminal Access Mode or MSI Software. The Terminal Access Mode is
used for updating scale firmware while MSI Software can be used for calibration and
configuration, backup and adjusting scale settings. This Comm Port is not intended
for output use as it is usually impractical to use a cable connected port on a Crane
Scale.
1.10.1 Comm Port Cables
The
MSI-4260
comes standard with one Comm Port Cable wired for RS-232 (MSI P/
N 501705-0001) following the AT standard for 9 pin serial cables (DCE). An un-
terminated cable is available (MSI P/N 12023) if you wish to wire your own serial
cable for RS-232.
Comm Port Cable Color Code RS-232
• Brown – Transmit output from CellScale, connect to receive of DTE.
• Black – Receive input to CellScale, connect to transmit of DTE.
• Grey – CTS Input to CellScale. Connect to RTS or RTR output of DTE.
• White – RTS/RTR output from CellScale. Connect to CTS input of DTE.
• Blue – Signal Ground
• Drain Wire – Connect to metal shell.
1
2
3
4
5
6
7
8
(NC) 9
Brown (TD)
Black (RD)
Blue (GND)
Grey (CTS)
White (RTS)
Jumper 1-6-4
RS-232 DCE
9-Pin Female ‘D’
Solder Cup View
Standard wiring for direct
4260 to Computer connection
1
2
3
4
5
6
7
8
9 (NC)
Brown (TD)
Black (RD)
Blue (GND)
Grey (CTS)
White (RTS)
Jumper 1-6-4
RS-232 DTE
9-Pin Male ‘D’
Solder Cup View
Wiring for direct 4260 to
Printer/Scoreboard connection
Figure 1-4 Comm Port Cable Assignments