39
FX
3U
-32DP PROFIBUS-DP Interface Block
User’s Manual
6 Buffer Memory Allocation
6.7 Transmission Speed [BFM #24]
1
Int
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Specifi
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Inst
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6.7
Transmission Speed [BFM #24]
BFM Access : Read Only
This BFM shows the current transmission speed of the DP network. The transmission speed depends on the
DP-Master setting. When the 32DP is in the transmission speed search mode, the value remains "FFFFh"
until the 32DP finds an applicable transmission speed.
6.8
DP Communication Status Register [BFM #25]
BFM Access : Read / Write (0 to Bit8 only)
This BFM shows the DP communication status as follows.
*1.
To avoid "Consistency Error" by changing the slave address while the Address Change Impossible
Flag is ON, write "FEFFh" to BFM#25 to turn OFF BFM#25 Bit8.
*2.
PROFIBUS Configuration Tool (e.g. GX-Configurator DP) will automatically turns these bits ON if
specified.
Value (Hex)
Transmission Speed (bps)
Value (Hex)
Transmission Speed (bps)
96E2 H
9.6 kbps
05E5 H
500 kbps
19E3 H
19.2 kbps
15E5 H
1.5 Mbps
45E3 H
45.45 kbps
03E6 H
3 Mbps
93E3 H
93.75 kbps
06E6 H
6 Mbps
18E4 H
187.5 kbps
12E6 H
12 Mbps
Bit No.
Name
Description
Bit 0
Module ONLINE/OFFLINE
ON when the module is ONLINE
Bit 1
Fail-Safe State Activate Flag
ON when the DP-Master activates the Fail-Safe mode
Bit 2
Diagnostics Status Flag
ON when the DP-Master does not retrieve any new diagnostic data,
nor any new alarm data
Bit 3
DP Watchdog Base
ON when the 1ms Watchdog Base is enabled
Bit 4
Bit 5
DP-State
00
b
= Waiting Parameters
01
b
= Waiting Configuration
10
b
= Exchanging Data
11
b
= not possible
Bit 6
Bit 7
DP-Watchdog-State
00
b
= Baud Search State
01
b
= Baud Control State
10
b
= DP Control State
11
b
= not possible
Bit 8
*1
Address Change Impossible Flag
Turns ON automatically when the 32DP receives Address Change
Impossible command from the DP-Master
The allowable access is only to turn this bit OFF
Bit 9
Clear Data Global Control
ON when the 32DP receives the clear data command
Bit 10
UNFREEZE Global Control
The 32DP received the UNFREEZE command
Bit 11
FREEZE Global Control
The 32DP received the FREEZE command
Bit 12
UNSYNC Global Control
The 32DP received the UNSYNC command
Bit 13
SYNC Global Control
The 32DP received the SYNC command
Bit 14
*2
FREEZE Supported
ON when the FREEZE mode is active
Bit 15
*2
SYNC Supported
ON when the SYNC mode is active
Summary of Contents for FX3U-32DP
Page 1: ...USER S MANUAL FX3U 32DP PROFIBUS DP Interface Block ...
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