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FX2N-32DP-IF Profibus-DP Interface Unit
Note 3: Communication status
This device is the 32DP-IF's communication status. According to the status of 32DP-IF the
bits are set and reset as follows.
Table 5.10: Communication Status in D8025
Bit No.
Description
Bit 0
Module on-line/off-line
Bit 1
Reserved
Bit 2
Diagnosis flag
Bit 3
Reserved
Bit 4, 5
DP-status
Bit 6, 7
DP-watchdog state
Bit 8
Reserved
BIt 9
Clear data global control
Bit 10
Unfreeze global control
Bit 11
Freeze global control
Bit 12
Unsync global control
Bit 13
Sync global control
Bit 14, 15 Reserved
*1 Clear data global control:
*2 Unfreeze global control:
*3 Freeze global control:
*4 Unsync global control:
*5 Sync global control:
1 (ON)
Module on-line
New diagnosis not yet fetched by
DP-master
(bit 5, 4) = (0, 0) Wait parameter state
(bit 5, 4) = (0, 1) Wait configuration state
(bit 5, 4) = (1, 0) Data exchange state
(bit 5, 4) = (1, 1) Not possible
(bit 7, 6) = (0, 0) Baud search state
(bit 7, 6) = (0, 1) Baud control state
(bit 7, 6) = (1, 0) DP search state
(bit 7, 6) = (1, 1) Not possible
*1
Clear data command received
*2
Unfreeze command received
*3
Freeze command received
*4
Unsync command received
*5
Sync command received
When this command is received, the 32DP-IF set to "0" the output
data (D100 ~ D199) of extension units/blocks connected it.
The UNFREEZE control command stops freeze control mode. The
input data (D0 ~ D99) of extension units/blocks connected to the
32DP-IF is immediately sent to the DP-master.
The DP-master sends a FREEZE control command to a group of
DP-slaves to hold their current input status. The input data (D0 ~ D99)
of extension units/blocks connected to the 32DP-IF are withheld until
the next FREEZE/UNFREEZE control command is received.
The UNSYNC command stops SYNC control mode. The output data
(D100 ~ D199) send from the DP-master is immediately transmitted
to extension units/blocks connected to the 32DP-IF.
The DP-master sends a SYNC control command to a group of
DP-slaves to synchronize their current output states. The output data
(D100 ~ D199) of extension units/blocks connected to the 32DP-IF
remains constant until the next SYNC/UNSYNC command is
received.
Advanced Devices 5
0 (OFF)
Module off-line
New diagnosis fetched by
DP-master
No clear data command received
No unfreeze command received
No freeze command received
No unsync command received
No sync command received
5-8
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