Hart Directory - Siemens SIMATIC ET 200SP HA Equipment Manual

HART operating data records
B.4 HART directory
The program part A M 49.1 to SPB m3 is only required if reading is to occur within a block cycle.
As long as the processing status (byte 0 of DB81) is at 3 (waiting, executing), the response has
not yet been received from the field device. As soon as the processing status changes to greater
than 3, the HART request is finished.
With a processing status of 4, the request finished without errors and the response data can be
evaluated.
With a processing status of 5, the request also finished without errors but without response data
from the field device.
With a processing status of 6 or 7, the request finished with errors. You can find more detailed
information in byte 1 of DB81 (see table "HART group fault display") and for a HART protocol error
also in byte 2 of DB81 (see table "HART protocol error during response").
B.4

HART directory

Structure of the HART directory
Byte
0
1
2
3
4
5
6
7
8
9+n
9+n+4
70
VALID :=M49.7
BUSY :=M49.1
ERROR :=M49.6
STATUS :=MD100
LEN :=MW104
RECORD :=P#DB81.DBX0.0 BYTE 200
A M 49.1
SPB m3
BE
Meaning
Profile Revision Number
Index of Client Management
Number of Clients
Number of Channels
Write Read Index Offset
Index of HMD Feature Parameter
Index of HMD Module Parameter
Start Index of Burst Buffer Area
Index of HMD Channel Parameter (Channel
n)
Index of HART Client Channel Message Data = 80+(2*n)
Block status or error information
Target area in DB81
Comment
= 2, 0 (Revision 2.0)
= 255 (not relevant)
= 1
= 4
= 1 (The response to a job data record is
made with the data record number of the
request data record + 1)
= 149
= 255 (not relevant)
= 255 (not relevant)
= 131+n
The HART request data records cannot be
configured. Data sets starting from data set
number 80 (80, 82, 84, 86) are always used.
Equipment Manual, 07/2022, A5E50102497-AB
AQ 4xI HART ISOL HA