INTRODUCTION
P485 MODBUS TO PROFIBUS CONVERTER – USER GUIDE 1–3
About the P485 Modbus to Profibus Converter
APPLICATION The P485 Modbus to Profibus Converter (or P485) acts as a gateway between the Modbus
protocol and a Profibus-DP network. Integration of industrial devices is enabled without
loss of functionality, control, and reliability, both when retrofitting to existing equipment as
well as when setting up new installations.
Figure 1-2: Typical applications
Features
GENERAL FEATURES • DIN-rail mountable
• Save/load configuration in flash
•CE, UL, and cUL marked
MODBUS NETWORK • RS232/RS422/RS485 communications
• Multi-drop or single-node configurations
• Modbus RTU Master mode
• Supports up to 50 commands
• Configuration via EnerVista P485/D485 Setup software
FIELDBUS INTERFACE
FEATURES
• Complete Profibus-DP slave functionality according to IEC 61158
• Node Address range: 1 to 99 using on board switches
• Baud rate range: 9.6 kbps to 12 Mbps. Auto baud rate detection supported.
• Transmission media: Profibus bus line, type A or B specified in IEC 61158
Profibus
master (PLC)
HMI
Profibus
slave
Profibus network
P485
PC for configuration
and monitoring
Multi-drop
Multi-node Modbus network
Single-node Modbus network
RS232 port
PC for configuration
and monitoring
Profibus slave
HMI
Profibus
master (PLC)
Profibus network
P485
