PROFIBUS DP-Master

Dual-Port-Memory 35/315
3.3 Status
A status block is present within the communication channel. It contains information about network and
task related issues. In some respects, status and control block are used together in order to exchange
information between host application and netX firmware. The application reads a status block whereas
the control block is written by the application. Both status and control block have registers that use the
Change of State mechanism (see also section 2.2.1 of the netX Dual-Port-Memory manual).
3.3.1 Common Status
The Common Status Block contains information that is the same for all communication channels. The
start offset of this block depends on the size and location of the preceding blocks. The status block is
always present in the dual-port memory.
3.3.1.1 All Implementations
The structure outlined below is common to all protocol stacks.
Common Status Structure Definition
Common Status
Offset Type Name Description
0x0010 UINT32 ulCommunicationCOS Communication Change
of State
READY, RUN, RESET
REQUIRED, NEW,
CONFIG AVAILABLE,
CONFIG LOCKED
0x0014 UINT32 ulCommunicationState Communication State
NOT CONFIGURED,
STOP, IDLE, OPERATE
0x0018 UINT32 ulCommunicationError Communication Error
0x001C UINT16 usVersion Version
Unique Error Number
According to Protocol
Stack
Version Number of this
Diagnosis Structure
0x001E UINT16 usWatchdogTime Watchdog Timeout
Configured Watchdog
Time
0x0020 UINT16 usHandshakeMode Handshake Mode
Process Data Transfer
Mode (see netX DPM
Interfce Manual)
0x0022 UINT16 usReserved
Reserved
Set to 0
0x0024 UINT32 ulHostWatchdog Host Watchdog
Joint Supervision
PROFIBUS DP-Master |
DOC061001API12EN | Revision 12 | English | 2010-12 | Released | Public © Hilscher, 2006-2010