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18 SERIAL RS232 AND 485 OUTPUT
The instrument has two serial outputs (1 unidirectional and 1 bidirectional), which have the output in
ASCII code compatible with the majority of printers, remote displays, PCs and other devices.
It is bi-directional (halfduplex) and uses an RS232 or RS485 for transmitting data. It is mainly used to
connect computers, PLCs, additional remote displays. The transmission speed may be selected in the
SET UP among these: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 Baud (bit/sec.).
The choice of RS232 or 485, is made by the parameter SEL PC, this other port will be unidirectional.
The transmission of the data via the port serial can be configured various ways, according to the
adjustment of the parameter “PCMode” in the environment CONFIGURATION: on request, continues,
stabilized.
18.1 SERIAL PORT RS232 and 485 (unidirectional) (printer, repeater or PLC)
Please find below the various selectable serial weight transmission modes of the PC serial port through
the corresponding “PCModE” step of the SET-UP environment.
- TRANSMISSION TO PRINTER
(“tPr” (for TP200) and “LP542” parameter): requests the use of the
print key on the indicator (prints upon request of the operator). The print command is inhibited if the
weight is in motion and in all other circumstances in which the data is not valid (see “EXECUTION
OF THE PRINTOUTS” section).
- CONTINUOUS TRANSMISSION
(“ALL.Std” and “ALL.EXt” parameter): see the “ALL.Std” and
“ALL.EXt” modes of the PC port.
- TRANSMISSION OF THE PC STRING UPON PRESSURE OF THE PRINT KEY (“PrPC.St” and
“PrPC.EX” parameter): see the “Prin.St” or “Prin.EX” mode of the PC port
- TRANSMISSION TO 6-DIGIT REMOTE DISPLAY (“rEPE.6” (for IPE50) parameter): see the
“rEPE.6” mode of the PC port.
THE CONNECTION AND THE SOFTWARE CONFIGURATION OF THE SERIAL OUTPUTS MUST
BE CARRIED OUT BY TECHNICAL PERSONNEL WHO KNOW THE PROCEDURES ON THE BASIS
OF THE NEEDS OF THE USER.
18.2 SERIAL PORT RS232 and 485 (bidirectional) (PLC, Master for network)
Please find below the various selectable serial weight transmission modes of the PC serial port through
the corresponding “PCModE” step of the SET-UP environment.
- TRANSMISSION REQUESTED FROM AN EXTERNAL DEVICE “ondE” parameter
In this case the indicator waits for a command before transmitting (see the section “SERIAL
COMMANDS FORMAT”).
With Baud rate at 9600, through the READ command, it is possible to make up to 10-11 requests
per second, while with Baud rate at 57600 one can arrive at 16.
The transmission works with weight <, =, > 0 with approved or unapproved instrument.
NOTE: This protocol is active also in the other functioning modes, only on the PC serial output.
- 4 – 6 DIGIT REMOTE DISPLAY TRANSMISSION “rEPE.4” and “rEPE.6” (for IPE50) parameter
The weight displaying takes place both in the indicator as well as in a weight repeater of 4 or 6
digits, (normally the capacity will be properly set up for a correct displaying).
N.B. When either transmission mode is selected, the relative serial output is automatically set to 4800,
N – 8 – 1.
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