Siemens SIMATIC S7 System Manual page 257

Parameter CONDITIONS data type structure part 1 (start conditions)
Parameter
STARTCOND
IDLETIME
STARTCHAR
STRSEQ1CTL
STRSEQ1
STRSEQ2CTL
STRSEQ2
STRSEQ3CTL
STRSEQ3
STRSEQ4CTL
STRSEQ4
S7-1200 Programmable controller
System Manual, 11/2009, A5E02486680-02
ignored are not required to be part of the message. Any trailing characters that are
ignored are required to be part of the message.
Parameter
type
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
Data type Description
UInt Specify the start condition:
01H - Start Char

02H - Any Char

04H - Line Break

08H - Idle Line

10H - Sequence 1

20H - Sequence 2

40H - Sequence 3

80H - Sequence 4

UInt The number of bit times required for idle line timeout.
Only used with an idle line condition. 0 to 65535
Byte The start character used with the start character
condition.
Byte Sequence 1 ignore/compare control for each character:
These are the enabling bits for each character in start
sequence
01H - Character 1

02H - Character 2

04H - Character 3

08H - Character 4

10H - Character 5

Disabling the bit associated with a character means
any character will match, in this sequence position.
Char[5] Sequence 1 start characters (5 characters)
Byte Sequence 2 ignore/compare control for each character
Char[5] Sequence 2 start characters (5 characters)
Byte Sequence 3 ignore/compare control for each character
Char[5] Sequence 3 start characters (5 characters)
Byte Sequence 4 ignore/compare control for each character
Char[5] Sequence 4 start characters (5 characters)
Point-to-Point (PtP) communications
8.7 Point-to-Point instructions
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