5.2.2
Requirements for communication between scale and PC
•
The scale must be connected to the RS232, RS485, USB or Ethernet interface of a
PC with a suitable cable.
•
The interface of the scale must be set to "Dialog" mode, see Section 4.6.1.
•
A terminal progam must be available on the PC, e.g. HyperTerminal.
•
The communication parameters baud rate and parity must be set in the terminal
program and on the scale to the same values, see Section 4.6.3.
5.2.3
Notes on network operation via the optional interface RS422/485
Up to 32 scales can be networked with the optional RS422/485 interface. In network
operation, the scales must be addressed from the computer before commands can be
sent and weighing results received.
Description of the steps
Host
Direction
Scale
1. Host addresses the scale, e.g. with the address
3A hex.
<ESC> 3A
–––>
2. Host sends a SICS command, e.g. SI
SI <CRLF>
–––>
3. The scale confirms receipt of the command and
sends the address back
<–––
<ESC> 3A
4. The scale responds to the command and returns
control of the bus to the host
<–––
S_S____45.02_kg
<CRLF>
Interface description
Ranger RC
39
