FX2N-32DP-IF Profibus-DP Interface Unit Advanced Devices 4
4-7
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.

*1 Clear data global control: When this command is received, the 32DP-IF set to “0” the o utput
data (D100 ~ D199) of extension units/blocks connected it.
*2 Unfreeze global control: The UNFREEZE control command stops freez e control mode. The
input data (D0 ~ D99) of extension units/blocks connected to the
32DP-IF is immediately sent to the DP-master.
*3 Freeze global control: The DP-master sends a FREEZE con trol 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.
*4 Unsync global control: The UNSYNC command stops SYNC control mo de. The output data
(D100 ~ D199) send from the DP-master is immediately transmitted
to extension units/blocks connected to the 32DP-IF.
*5 Sync global control: The DP-master sends a SYNC control com mand to a group of DP-
slaves to synchronize their current output states. The outpu t data
(D100 ~ D199) of extension units/blocks connected to the 32DP-IF
remains constant until the next SYNC/UNSYNC command is
received.

Table 4.8: Communication Status in D8025

Bit No. Description 1 (ON) 0 (OFF)
Bit 0 Module on-line/off-line Module on-line Module off-line
Bit 1 Reser ved
BIt 2 Diagnosis flag New diagnosis n ot yet fetched by
DP-master New diagnosis fetched by
DP-master
Bit 3 Reser ved
Bit 4, 5 DP-status
(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 6, 7 DP-watchdog state
(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
Bit 8 Reser ved
BIt 9 Clear data global con trol *1 Clear data command received No clear data command received
Bit 10 Unfreeze global control *2 Unfreeze command received No unfreeze command received
Bit 11 Freeze global control *3 Freeze command received No freeze command received
Bit 12 Unsync global control *4 Unsync command received No unsync command received
Bit 13 Sync global control *5 Sync command received No sync command received
Bit 14, 15 Reserved