Metrohm 789 Robotic Sample Processor XL - Manual (Page 89)

3.4 Commands
Metrohm Sample Processor, Operation 81
1
SCAN >Sample sequence
8 SCN:RS
Rm,RS
default value: ∗R"
14 ASCII characters
Scanning the RS232 interface
= scan "Ready" status message
any data string with 14 characters
In a sequence the SCN:RS command will halt the method sequence
until the predefined data string (up to 14 characters) has been received
via the serial RS232 interface. Incoming data is checked character by
character.
Make sure that the transmission parameters of the RS232 interface are
identical with those of the connected device (see configuration menu
>RS232 settings , p. 65).
Any letters, numbers and special characters can be selected from the
character set of the Sample Processor. '∗' can be set as wild card for
any character string. (If '∗' is to be interpreted as an ASCII character
then '∗∗' must be used.) A wild card can be set within a character string.
When the first part of the character string has been recognized correctly
then a search will be made for the first appearance of the character
standing after '∗'. In this case the comparison will be made with the
second part of the character string.
This function is primarily suitable for devices that understand the
Metrohm Remote language, such as Titrinos. In this case the AutoInfo
status messages can be scanned. The most useful of these are:
∗.T.R" Ready, 'Ready' state has been achieved, e.g. after titration
∗.T.F" Final, end of the determination has been achieved
∗.T.S" Stop, instrument has been stopped manually
∗.T.G" Go, instrument has been started
∗.E;∗ Error, error message
However, these status messages will only be transmitted when the cor-
responding status message has first been switched on, e.g. in the start
sequence, e.g. for a Titrino with the command: CTL:RS &Se.A.T.R"ON".
More detailed information about the syntax can be found in the Instruc-
tions for Use of the instrument whose status messages are to be
transmitted.
Details of the CTL command are given below.
With the LEARN function transmitted data (=character strings) can be
adopted interactively (see p. 113).