6. REDUNDANCY WITH NX3030 CPU
PROGRAM NonSkippedPrg
VAR
TON_DiagEnable : TON_NR;
bDiagEnable : BOOL;
bIsActiveState : BOOL;
bIsActiveState_old : BOOL;
END_VAR
bIsActiveState := (DG_NX4010.tRedundancy.RedDgnLoc.sGeneral_Diag.eRedState =
REDUNDANCY_STATE.ACTIVE);
TON_DiagEnable(IN:= (bIsActiveState = bIsActiveState_old), PT:= T#5S, Q=>
bDiagEnable);
bIsActiveState_old := bIsActiveState;
Logic in ActivePrg:
IF NonSkippedPrg.bDiagEnable THEN
IF DG_NX5001.tGeneral.bSlaveNotPresent OR DG_NX5001.tGeneral.bPbusCommFail THEN
//Actions executed when the diagnostics are active
END_IF
END_IF
6.5. Redundant CPU Program Downloading
The Redundant CPU Programming section described issues related to the development of a project for a redundant CPU
with NX3030 CPU.
In this section, many methods and steps to download this project in a redundant CPU are described, considering situations
such as:
Downloading the project in a brand new NX3030 CPU or in a CPU with an unknown project
Online modifications downloading
Offline modifications downloading with the process control interruption, during a programmed process stopping
Offline modifications downloading without the process control interruption, using redundancy features
6.5.1. Initial Downloading of a Redundant Project
This section describes the necessary steps to run the first download of a redundant project in a NX3030 CPU. This is
necessary, for instance, for a brand new CPU recently manufactured, or for a CPU that has an unknown project.
ATTENTION
The following steps must be executed for both half-clusters (PLCA and PLCB) which com-
pose a redundant CPU. First all steps must be executed for one CPU and then for the other.
6.5.1.1. First Step – IP Address Discovering for MasterTool Connection
The first step is to discover the IP address from the NET 1 channel in this CPU, for MasterTool connection.
This must be done through NX3030 CPU display and button, as described in the CPU’s Informative and Configuration
Menu section. The NETWORK menu informs the IP address which can be used for MasterTool connection.
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