Configuration
4.13 Communication with the CPU
TIM 1531 IRC
Operating Instructions, 02/2018, C79000-G8976-C468-02
83
Byte 0 "Partner status"
Byte 0 codes information on the reachability of the communications partner, on the existing
connections and connection paths and on the status of the send buffer of the TIM.
Table 4- 1
Assignment of byte 0: Meaning of the bit statuses
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Path redun-
dancy
Connection
mode
Temporary
connection **
(Re-
served)
Message memory *
Path status
Partner status
0: No redun-
dancy
1: Redundancy
exists
0: Permanent
1: Temporary
0: Partner not
reachable
1: Partner
accessible **
-
0: Send buffer OK
1: Memory allocation >
90%
3: overflow (memory
allocation 100%)
0: Not all paths
reachable
1: All paths
reachable
0: Partner not
reachable
1: Partner
accessible
* For information on the behavior of the frame memory, refer to the paragraph "Send buffer" in the section:
** Partners that support temporary connections are set to "accessible" if the partner itself terminates the connection and
there is no connection established.
Process image, type of transmission, event classes (Page 113)
Byte 1 "Path status"
Byte 1 shows the status of the connection path (configured connection) to the partner from
the point of view of the local TIM.
A maximum of 2 paths (main and substitute path) to a partner can be configured, see section
Creating telecontrol connections for the ST7 communication (Page 99).
Both connection paths must start or end on a local TIM.
The byte shows the following:
●
The paths via which the partner can be reached.
●
The path currently being used
●
The TIM interface via which the main path was configured.
●
The TIM interface via which the substitute path was configured.
The path of a connection is specified as a combination of the used interfaces of the TIM and
the status of the path.
Byte assignment
Byte 1 is assigned as follows:
●
Two bits for the interface of the main path
●
Two bits for the interface of the substitute path
●
Two bits for the status of the main path
●
Two bits for the status of the substitute path
