Chapter 5 System Configuration; Configuration Of Profibus-Dp Network - Mitsubishi Electric RJ71PB91V-U-IN-E User Manual

5
SYSTEM CONFIGURATION
5.1

Configuration of PROFIBUS-DP network

This section describes the basic configuration of the PROFIBUS-DP network using the RJ71PB91V as DP-Master (Class 1).
To configure the PROFIBUS-DP network, following conditions should be met.
Configuration condition
Number of connectable modules in the entire
network (when repeaters are used)
Number of connectable modules per segment
Number of repeaters
Number of connectable DP-Slaves per RJ71PB91V
*1 Includes the RJ71PB91V.
*2 Repeaters are counted as modules for both segments.
In the multi-master system configuration, the DP-Master whose communication chips use ASPC2 STEP C or
equivalent cannot be connected to the PROFIBUS-DP network to which the RJ71PB91V is connected. To use
the DP-Master having such communication chips, configure another network.
For communication chips used, contact the manufacturer.
Maximum configuration when repeaters are not connected
Up to 32 modules can be connected in one segment.
DP-Master (RJ71PB91V): 1
DP-Slave: 31
(2)
No.1
No.: FDL address (1 to 31 are for DP-Slaves, and 32 is for DP-Master)
(1) Segment
(2) Bus resistor
*1 Any FDL address can be assigned to the DP-Master.
5 SYSTEM CONFIGURATION
22
5.1 Configuration of PROFIBUS-DP network
Description
*1
+ DP-Slave  126
DP-Master
*1
DP-Master + DP-Slave + Repeater
Maximum of 3 repeaters between the RJ71PB91V and a DP-Slave
125
RJ71PB91V
No.32
No.31
*2
 32
(2)
(1)
*1