GE RX3i - Chapter 5 Ethernet Global Data

GFK-2224Q January 2017 69
Chapter 5 Ethernet Global Data
This chapter describes basic Ethernet Global Data (EGD) features, which are supported on all RX7i Ethernet
interfaces and by the rack-based RX3i Ethernet interface (ETM001). Effective with RX3i CPE310/CPE305
Firmware Release 8.30, the RX3i CPU itself also supports EGD Class 1
3
on Embedded Ethernet Interface. RX3i
CPE330 Firmware Release 8.60 supports EGD Class 1. All versions of CPE400 support EGD Class 1. The topics
covered are:
▪ Ethernet Global Data Operation
▪ EGD Exchanges
▪ The Content of an EGD Exchange
- The Data Ranges (Variables) in an EGD Exchange
- Valid Memory Types for Ethernet Global Data
- Planning Exchanges
- Using Ethernet Global Data in a Redundancy System
▪ Sending an Ethernet Global Data Exchange to Multiple Consumers
- Multicasting Ethernet Global Data
- Broadcasting Ethernet Global Data
Note: For Broadcast addressing a Subnet value of 0.0.0.0 is NOT supported.
▪ Ethernet Global Data Timing
- Configurable Producer Period for an EGD Exchange
- Consumer Update Timeout Period
- EGD Synchronization
▪ Time-stamping for Ethernet Global Data Exchanges
▪ Effect of PLC Modes and Actions on EGD Operations
▪ Run Mode Store (RMS) of EGD
▪ Monitoring Ethernet Global Data Exchange Status