Siemens SIPROTEC PROFINET IO User Manual

2 PROFINET IO in SIPROTEC
2.3 Data-Type Definitions for IO Data Exchange
27SIPROTEC 4, Communication Module PROFINET IO, Communication Profile
C53000-L1840-C360-1, Edition 08.2012
Byte 2: Value
Byte 2 in the message block contains the value of an indication after registering a change, plus an identifier
whether it is a single-point indication or a double-point indication.
Figure 2-12 Byte 2 - Value in the data type Message Block
• Value (bit 0 and bit 1)
− Single-point indication (binary output):
00 = OFF
01 = ON
− Double-point indication (binary output):
00 = disturbed state
01 = OFF
10 = ON
11 = disturbed state
• Indication type (bit 4 and bit 5)
01 = 1 = single-point indication
10 = 2 = double-point indication
Example:
A change from ON to OFF of a single-point indication is transmitted with the value byte:
00010000
bin
= 10
hex
.
Byte 3 through Byte 10: Time Stamp
The real-time stamp is transmitted with the data depicted in Figure 2-10 for the instant of time the indication
was changed. Time and date are indicated in UTC (Universal Time Coordinated).
Meaning of the clock status (byte 9):
•00
hex
= time is valid
•20
hex
= time is invalid (clock failure)
1
Byte 2 - Value
4567203 Bit position
Meaning
Byte
Reserved = 0
Indication type
Reserved = 0
Value
NOTE
Correction factors for daylight saving time and local settings are not considered.
com_profinet-io_profile_us.book Page 27 Friday, August 17, 2012 1:40 PM

Siemens SIPROTEC PROFINET IO Specifications

General

Brand	Siemens
Model	SIPROTEC PROFINET IO
Category	Control Unit
Language	English