Features; Transmission Control Protocol (Tcp) - ABB SPA-ZC 400 Installation And Commissioning Manual

1MRS756014
3.2.
3.3.
Ethernet Adapter
Modbus/TCP Brigde
Installation and Commissioning Manual

Features

SPA-ZC 400 has the following features:
Simultaneous dual port communication (SPA-ZC400MMP and SPA-
*
ZC400MMG versions) for Modbus and LON/SPA
polling)
Support of Modbus communication over TCP/IP
*
5
4
1 2
Fig. 3.2.-1 Parts of SPA-ZC 400
1 Ethernet connector
2 LON/ SPA bus connector (optional)
3 LON/ SPA Rx LED
4 LON service pin
5 LAN and diagnostics LEDs

Transmission Control Protocol (TCP)

The Transmission Control Protocol (TCP) is the most commonly used
protocol for exchanging data between communication devices using Ethernet.
Unlike UDP, the TCP protocol guarantees reliable transmission between
applications. TCP also distinguishes data for multiple, concurrent
applications running on the same host.
3
SPA-ZC 400
(excluding event
A040138B
15