EF315_r5.1(v12.22) – 03/2023 page 25
SERIAL LINE (optional)
EF315 may be equipped with an RS232C serial line, for communicating with terminals, PC or advanced
PLC. The recommended application is the RW14 WEB interface, that allows to remotely monitor the unit,
and configure it. The dialogue on the serial line is a simple exchange of ASCII characters without any
protocol and without control characters. The transmitting-receiving characteristics are the following:
9600 BAUDS, 8 BITS, NO PARITY, 1 STOP BIT
The messages sent on serial line have been designed to be as simple and intuitive as possible.
The pin association on the M8 connector is described in the “Electrical Connections” section.
Automatically EF315 send the following messages:
- START-UP EF315 Vxx at start-up
- LOW POWER at start-up or in case of power lowering
EF315 interprets the following commands:
Display measure 1 value
Microprocessor reset (reboot)
Display measure 2 value
Command Help
Display measure 3 value
Read value of parameter xxx
SS Status of inputs, outputs, alarms
Pxxx =
Write value YYYY in parameter xxx
ZZ Reset Offset/Gain values Tn
Read telephone number
(or message) “n”
Tn=[16chr]
Write telephone number
(or message) “n”
Also are valid other calibration commands not listed in the above table, because they are for internal use
only (factory configuration).
After each command, press <CR> (or <ENTER>).
All messages on the serial line are fixed and do not depend on the chosen language.
If a wrong command is entered, press <CR> to send it anyway (it will have no effect), and then send
again the desired command.
Configuration from Serial Line (for skilled personnel only)
This section is reserved to skilled users who wish to connect the EF315 unit to its own supervision
system. When connecting the EF315 unit to the RW14 remote supervisor, the communication between
the two devices is user friendly.
Configuration procedure through RS232C (serial line):
1) Connect the supervisor (for example, a PC) to the serial port plug, while paying attention to the
connections.
2) To the Pxx (CR) command sent by the supervisor, EF315 answers by sending the parameter
value “xx”.
3) If the supervisor command is Pxx=1234 (CR), EF315 interprets the 4 digits following the sign “=”
as the new value of that parameter.
♦ All values read or to be written, have no comma: for example, if P03 is set to 7.20pH (K1
threshold), it will be read as 0720; also if you want to set P03 to 7.30pH, the command should be
P03=0730 (CR).
♦ The EF315 stores the value in memory without checking. It is the supervisor that has to check the
limits.
♦ Commands sent through serial line can be both uppercase and lowercase.
♦ The “Cancel” command is not active. If you enter a wrong value, you have to re-enter it.
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