ProSoft Technology 5201-MNET-ASCII - Manual (Page 12)

Functional Overview MNET ♦ ProLinx Gateway
Driver Manual Modbus TCP/IP Interface Module
Page 12 of 78 ProSoft Technology, Inc.
September 1, 2010
1.3 Modbus TCP/IP
ProSoft’s Modbus TCP/IP implementation uses the module’s shared internal
memory for data transfer. Sharing the memory with another protocol driver allows
the module to transfer data between Modbus TCP/IP devices and other devices
on other networks.
Configurable floating-point data movement is supported, including support for
Enron or Daniel
® floating-point applications.
Modbus TCP/IP Server (Slave)
The server driver accepts incoming connections on Service Port 502 for clients
using Modbus TCP/IP MBAP messages and from clients on Service Port 2000
(or other Service Ports) for clients using Encapsulated Modbus messages..
 Supports five independent server connections for Service Port 502 (MBAP)
 Supports five independent server connections for Service Port 2000
(Encapsulated)
 Supports a total Modbus TCP/IP data transfer capacity of up to 4000
registers or up to 64,000 bits in any combination of data types throughout the
memory database
 Modbus data types overlap in the gateway’s memory database, so the same
data can be conveniently read or written as bit-level or register-level data.
Modbus TCP/IP Client (Master)
 Actively reads data from and writes data to Modbus TCP/IP devices, using
MBAP or Encapsulated Modbus message formats
 Offers one client connection with up to 100 commands to talk to multiple
severs
Status Data
Error codes, counters, and port status available