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Milltronics SF 500 - INSTRUCTION MANUAL
7ML19985CN01
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Communi
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Text Messages
If a Siemens Milltronics device parameter returns a text message, that message is
converted to a number and provided in the register. The numbers are shown in the table
below:
Modems
The SF 500 has been successfully connected to several different modems. In general, the
Modbus protocol is a very modem friendly protocol. This section gives some general
guidelines on modems and their connection. For detailed information, see the modem
documentation.
Picking Modems
There are several different types of modems; dial-up, leased line, radio-link, fiber-optic to
name the most common.
Dial-up
uses a standard analog phone line and dials the number of the receiving modem.
Lease line
come in either 2 or 4 wire types and use special phone lines that are ‘leased’ from your
phone company (or you) and do not require any dialing.
Number
Text Message as Displayed on LCD
22222
invalid value
30000
OFF
30001
ON
30002
= = = =
30003
(parameter does not exist)
30004
err
30005
err1
30006
open
30007
shrt
30008
pass
30009
fail
30010
hold
30012
hi
30013
de
30014
en
-32768
value is less than -20,000
32767
value is greater than 20,000