Profibus-Dp Network Status (M8020 ~ M8039 And D8020 ~ D8039) - Mitsubishi FX2N User Manual

FX2N-32DP-IF Profibus-DP Interface Unit
4.2.2

Profibus-DP Network Status (M8020 ~ M8039 and D8020 ~ D8039)

Table 4.5: Special Auxiliary Relays (M8020 ~ M8039)
Diagnostic
Device
M8020
M8021 ~ M8033
M8034
M8035 ~ M8039
Table 4.6: Special Data Registers (D8020 ~ D8039)
Diagnostic
Device

( )
D8020

( )
D8021

( )
D8022

( )
D8023

( )
D8024

( )
D8025

( )
D8026

( )
D8027
D8028



( ) (
D8029
Note 1: Swap byte order
Some DP-masters handle lower bytes and higher bytes of a word in a reverse order than the 32DP-
IF. To enable the module to communicate with these masters, bit 0 of data register D8021 can be set.
If bit 0 is "1", the low order byte and the high order byte of each user data word and of the user spe-
cific diagnosis will be swapped. Bit 0 of D8021 can also be set or reset by the second user defined
parameter byte received from a master. The default value after power up is "0".
Name
Setting parameter
Reserved
All output disable
Reserved
Name
Data exchange
status
Swap byte order
Length of input
(sent) data in byte
Length of output
(received) data in
byte
Baud rate
Communication
status
Profibus module
ID (PNO ID code)
Slave address
Reserved
) Error status
When this bit is changed from OFF to ON, the parameter D200
~ D299 (made by the programming tool) is written to special
function blocks' BFM. After the write is completed, this bit is
turned automatically to OFF.
All physical switch gear for activating outputs is disabled. How-
ever, for debugging purposes the logical state of these outputs
(D100 ~ D199) can be set, but remain disabled in the actual
module.
Data register D8020 contains a status bit for data exchange.
If this is "1", 32DP-IF is in data exchange mode.
If this is "0", 32DP-IF is not in data exchange mode.
See note 1.
The values held in these devices are copied from the input data
length and output data length setting in the DP-master.
See note 2.
See note 3.
PNO-Nr.F232 (Hex)
(This number contains the Profibus module ID number for the
32DP-IF.)
The slave address is set only by the 32DP-IF's DIP switches.
The slave address value is 0 to 126. The address change by a
Profibus-DP Class 2 master via the network or by a program-
ming device is not supported.
See note 4.
Advanced Devices 4
Description
Description
4-5