Introduction

This topic describes the Control Expert Device DDT tab for a Quantum local rack that includes a 140CRP31200 remote I/O head module. A derived data type (DDT) is a set of elements with the same type (ARRAY) or with different types (structure).

The device DDT instance name can be defined manually but, when adding a module, a default device DDT instance name is defined by Control Expert

Modifying a Device DDT name

In Control Expert a Device DDT name can be easily modified:

Step

Action

Comment

1

Open Data Editor in the Control Expert Project Browser .

Path: Tools > Data Editor

2

Right click on the device DDT and use the Copy/Paste.

A new default name is proposed by default.

3

Expand Local Bus in the Control Expert Project Browser .

Path: Tools > Project Browser > Project > Configuration > Local Bus

4

Double-click the 140CRP31200 module.

The parameter tabs appear.

5

Select the Device DDT tab.

select the new DDT name (eg : My_CRP312) as the name of Device DDT.

The Implicit device DDT field contains a default name and type.

Access the Device DDT Tab

In Control Expert:

Step

Action

Comment

1

Expand Local Bus in the Control Expert Project Browser .

Path: Tools > Project Browser > Project > Configuration > Local Bus

2

Double-click the 140CRP31200 module.

The parameter tabs appear.

3

Select the Device DDT tab.

  

Example of the Implicit device DDT area which contains a name and a type.

Parameters

Use the Control Expert Device DDT tab to configure parameters for the 140CRP31200 module on the local rack:

Parameter

Description

Implicit device DDT

Name

a default device DDT instance name is defined by Control Expert.

Type

module type (uneditable)

Goto details

link to the DDT data editor screen

Implicit Device DDT Types

The 140CRP31200 module implements the implicit device DDT type in accordance with the CPU configuration:

  • T_U_CRP_HSBY_IN: Hot Standby configurations

  • T_U_CRP_STD_IN: standalone configurations

Hot Standby Configurations

This table describes the fields in the T_U_CRP_HSBY_IN implicit device DDT type that is used with the 140CRP31200 module in Hot Standby configurations:

Field

Type

Access

Description

LOCAL_PLC

T_U_CRP_STD_IN

R

140CRP31200 status (local PLC)

REMOTE_PLC

T_U_CRP_STD_IN

R

140CRP31200 status (remote/peer PLC)

Standalone and Hot Standby Configurations

This table describes the fields in the T_U_CRP_STD_IN implicit device DDT type that is used with the 140CRP31200 module in standalone and Hot Standby configurations.

ETH_STATUS (BYTE):

Name

Type

Rank

Bit

Description

PORT1_LINK

BOOL

0

0

0 = Port 1 link is down.

1 = Port 1 link is up.

PORT2_LINK

BOOL

1

1

0 = Port 2 link is down.

1 = Port 2 link is up.

PORT3_LINK

BOOL

2

2

0 = Port 3 link is down.

1 = Port 3 link is up.

PORT4_LINK

BOOL

3

3

0 = Port 4 link is down.

1 = Port 4 link is up.

CRP_LINK

BOOL

4

4

0 = CRP link is down.

1 = CRP link is up.

REDUNDANCY_STATUS

BOOL

5

5

0 = Redundant owner is not present.

1 = Redundant owner is present.
NOTE: In Hot Standby systems, if this bit is set to 1 either in the local or remote 140CRP31200 DDT then the main physical ring is OK. If this bit is set to 0 in both the local and remote 140CRP31200 DDTs, the main physical ring is broken.

SCANNER_OK

BOOL

6

6

0 = Scanner is not present.

1 = Scanner is present.

GLOBAL_STATUS

BOOL

7

7

0 = At least 1 service is not operating normally.

1 = All services are operating normally.
NOTE: You can monitor breaks in the remote I/O main ring by diagnosing the REDUNDANCY_STATUS bits in the 140CRP31200 module DDT. The system detects and reports in this bit a main ring cable break that persists for at least 5 seconds.

Within the REDUNDANCY_STATUS bit:

  • 0: The cable is broken or the device is stopped.

  • 1: The loop is present and healthy.

In a Hot Standby system, perform a BITWISE OR operation of the REDUNDANCY_STATUS bit in the DDTs for both the primary and standby 140CRP31200 modules to determine whether a cable break has occurred. As indicated above, a value of 0 indicates a cable break; a value of 1 indicates no cable break.

SERVICE_STATUS (BYTE):

Name

Type

Rank

Bit

Description

RSTP_SERVICE

BOOL

0

0

0 = RSTP service is not operating normally.

1 = RSTP service is operating normally or disabled.

PORT502_SERVICE

BOOL

2

2

0 = Port 502 service is not operating normally.

1 = Port 502 service is operating normally or disabled.

SNMP_SERVICE

BOOL

3

3

0 = SNMP service is not operating normally.

1 = SNMP service is operating normally or disabled.

IP_ADDRESS_STATUS

BOOL

4

4

0 = IP address is a duplicate or unassigned.

1 = Assigned IP address is not a duplicate.

(reserved bits)

—

5...7

5...7

—

ETH_PORT_STATUS:

Name

Rank

Bit

Description

These combined 2-bit values indicate the conditions (WORD)

—

1/0

Ethernet port 1 function

—

3/2

Ethernet port 1 RSTP role

—

5/4

Ethernet port 2 function

—

7/6

Ethernet port 2 RSTP role

—

9/8

Ethernet port 3 function

—

11/10

Ethernet port 3 RSTP role

—

12/13

Ethernet port 4 function

—

14/15

Ethernet port 4 RSTP role

port function

—

0

disabled

1

access port

2

port mirror

3

remote I/O network port

RSTP role

—

0

unknown

1

alternate/backup

2

root

3

designated

IN_BYTES:

Type

Rank

Bit

Description

UINT

4/5

—

number of bytes (octets) received on interface

IN_ERRORS:

Type

Rank

Bit

Description

UINT

6/7

—

number of inbound packets that contain detected errors

OUT_BYTES:

Type

Rank

Bit

Description

UINT

8/9

—

number of bytes (octets) sent on interface

OUT_ERRORS:

Type

Rank

Bit

Description

UINT

10/11

—

number of outbound packets that contain detected errors