Atop Technology MB5001C User Manual - Manual (Page 38)

User Manual Version 1.0
MB5001C series 1-port Modbus Gateway
Copyright © 2010 Atop Technologies, Inc.
All rights reserved. Designed in Taiwan.
37
B.2 Software Specifications
Item Specifications
Protocol  TCP/IP, UDP, HTTP, SNMP, ARP, Telnet, ICMP, BOOTP, DHCP
Configuration  Configuration information for both TCP/IP and serial ports is kept in
the EEPROM.
 Configuration utilities of Windows 95/98/2000/NT/XP/2003 are
provided for configuring settings.
Internal Buffer Size  TCP receiving buffer size = 8K bytes
 TCP transmitting buffer size = 16K bytes
 RS-232 or RS-485/RS-422 receiving buffer size = 4K bytes
 RS-232 or RS-485/RS-422 transmitting buffer size = 4K bytes
B.3 Panel Layout and Connector Pin Assignments
B.3.1 Pin Assignments
DB9 Pin Assignments
The pin assignments of DB9 connector on MB5001C are shown in the following table:
Pin#
RS-232
Full Duplex
for MB5001C Model
RS422/4-Wire RS-485
Full Duplex
for MB5001C Model
2-Wire RS-485
Half Duplex
for MB5001C Model
1 DCD N/A N/A
2 RXD TXD+ N/A (reserved)
3 TXD RXD+ DATA+
4 DTR N/A N/A
5 SG (Signal Ground) SG (Signal Ground) SG (Signal Ground)
6 DSR N/A N/A
7 RTS RXD- DATA-
8 CTS TXD- N/A (reserved)
9 N/A N/A N/A
Terminal Block Pin Assignments
The pin assignments of Terminal Block connector on MB5001C-Sis are shown in the following table:
Pin#
RS422/4-Wire RS-485
Full Duplex
For MB5001C-Sis
2-Wire RS-485
Half Duplex
For MB5001C-Sis
1 T+ NC
2 T- NC