Chapter 5 System Configuration; Configuration Of Profibus-Dp Network - Mitsubishi Electric MELSEC iQ-R Series User Manual

5
SYSTEM CONFIGURATION
For the configuration of the MELSEC iQ-R series system and the types, number, installation, and wiring of modules
connectable to the CPU module, refer to the following.
 MELSEC iQ-R Module Configuration Manual
5.1

Configuration of PROFIBUS-DP network

This section describes the basic configuration of the PROFIBUS-DP network using the RJ71PB91V as the DP-Master or a
DP-Slave.
To configure the PROFIBUS-DP network, following conditions should be met.
Configuration condition
Number of connectable modules of
the entire network
Number of connectable modules
per segment
Number of repeaters
*1 Includes the own DP-Master.
• In the multi-master system configuration, DP-Master whose communication chips use ASPC2 STEP C or
equivalent cannot be connected to the PROFIBUS-DP network to which DP-Master that uses the
RJ71PB91V is connected. To use the DP-Master having such communication chips, configure another
network. For communication chips used, contact the manufacturer.
• In the redundant system that uses DP-Slaves that are intended to occupy FDL addresses of the control
system and those of the standby system separately, the number of connectable DP-Slaves is 62.
Maximum configuration of segment
Maximum of 32 modules can be connected in one segment.
DP-Master: 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.
Description
*1
+ DP-Slave  126 modules
DP-Master
*1
+ DP-Slave + Repeater  32
DP-Master
modules( Page 28 Maximum configuration of
network (using one repeater))
Maximum of three repeaters between the DP-Master
and a DP-Slave
RJ71PB91V
No.32
No.31
*1
When redundant system is configured
DP-Master of the control system
system + DP-Slave  126 modules
DP-Master of the control system
system + DP-Slave + Repeater  32 modules
Maximum of three repeaters between the DP-Master and a
DP-Slave of both systems
(2)
(1)
5.1 Configuration of PROFIBUS-DP network
*1
+ DP-Master of the standby
*1
+ DP-Master of the standby
5 SYSTEM CONFIGURATION
5
27