Siemens SIMATIC ET 200SP HA - Application case 1 a: SIL3;Cat.3;PLd, 2-wire transmitter, 1 oo1 (high availability)

Description
The 1st and 2nd status byte is structured as follows:
Table 7-1 1st status byte
When bit 7 = 1: Communication error
Bit 6 = 1
Bit 5 = 1
Bit 4 = 1
Bit 3 = 1
Bit 2 = 0
Bit 1 = 1
Bit 0 = 0
Parity error
Over󹪞ow
Framing error
Checksum error
Reserved
Over󹪞ow in the receive bu󹪜er
Reserved
When Bit 7 = 0: Bit 0 to 6 Speci󹪝c according to the response frame
Table 7-2 2nd status byte
Bit 7 = 1
Bit 6 = 1
Bit 5 = 1
Bit 4 = 1
Bit 3 = 1
Bit 2 = 1
Bit 1 = 1
Bit 0 = 1
Device fault
Con󹪝guration changed
Startup (cold start)
Additional status information available
Fixed analog output current setting
Analog output current saturated
Secondary variable outside the limits
Primary variable outside the range
7.3 Communication
7.3.1 Notes on communication
Reference is made to communication with HART in the following.
HART communication
With enabled HART operation, the analog module independently sends HART commands to the
connected 󹪝eld devices. This always occurs alternately on a channel-speci󹪝c basis with any
pending external HART commands that arrive via the command interface of the module.
• HART command (Page 43)
• HART command interface (Page 73)
The I/O module is used in the following operation:
Parallel operation (Page 45)
HART function
7.3 Communication
AI 4xI 2-/4-wire HART ISOL HA
42 Equipment Manual, 07/2022, A5E50101523-AB