Introduction

The T_U_DIS_SIS_IN_16 device derived data type (DDDT) is the interface between the BMXSDI1602 digital input module and the application running in the CPU. The T_U_DIS_SIS_IN_16 DDDT incorporates the data types T_SAFE_COM_DBG_IN and T_U_DIS_SIS_CH_IN.

All of these structures are described, below.

T_U_DIS_SIS_IN_16 DDDT Structure

The T_U_DIS_SIS_IN_16 DDDT structure includes the following elements:

Element

Data Type

Description

Access

MOD_HEALTH1

BOOL

  • 1: The module is operating correctly.

  • 0: The module is not operating correctly.

RO

SAFE_COM_STS1

BOOL

  • 1: Module communication is valid.

  • 0: Module communication is not valid.

RO

PP_STS

BOOL

  • 1: The process power supply is operational.

  • 0: The process power supply is not operational.

RO

CONF_LOCKED

BOOL

  • 1: Module configuration is locked.

  • 0: Module configuration is not locked.

RO

S_COM_DBG

T_SAFE_COM_DBG_IN

Safe communication debug structure.

RO

CH_IN_A

ARRAY[0...7] of T_U_DIS_SIS_CH_IN

Array of structure of channel from rank A.

–

CH_IN_B

ARRAY[0...7] of T_U_DIS_SIS_CH_IN

Array of structure of channel from rank B.

–

MUID2

ARRAY[0...3] of DWORD

Module unique ID (auto-assigned by Control Expert)

RO

RESERVED

ARRAY[0...9] of INT

–

–

1. When the SAFE task on CPU is not in running mode, the data exchanged between the CPU and the module are not updated and MOD_HEALTH and SAFE_COM_STS are set to 0.

2. This auto-generated value can be changed by executing the Build > Renew Ids & Rebuild All command in the Control Expert main menu.

T_SAFE_COM_DBG_IN Structure

The T_SAFE_COM_DBG_IN structure includes the following elements:

Element

Data Type

Description

Access

S_COM_EST

BOOL

  • 1: Communication with the module is established.

  • 0: Communication with the module is not established or corrupted.

RO

M_NTP_SYNC

BOOL

With CPU firmware 3.10 or earlier:

  • 1: The module is synchronized with the NTP server.

  • 0: The module is not synchronized with the NTP server.

NOTE: With CPU firmware 3.20 or later, the value is always 1.

RO

CPU_NTP_SYNC

BOOL

With CPU firmware 3.10 or earlier:

  • 1: The CPU is synchronized with the NTP server.

  • 0: The CPU is not synchronized with the NTP server.

NOTE: With CPU firmware 3.20 or later, the value is always 1.

RO

CHECKSUM

BYTE

Communication frame checksum.

RO

COM_DELAY

UINT

Communication delay between two values received by the module:

  • 1...65534: The time, in ms, since the last communication was received by the CPU from the module.

  • 65535: The CPU did not receive a communication from the module.

RO

COM_TO

UINT

Communication time-out value for communications coming from the module.

R/W

STS_MS_IN

UINT

Safe timestamp value for the fraction of a second, to the nearest ms, of the data received from the module.

RO

S_NTP_MS

UINT

Safe time value for the fraction of a second, to the nearest ms, for the current cycle.

RO

STS_S_IN

UDINT

Safe timestamp value in seconds of the data received from the module.

RO

S_NTP_S

UDINT

Safe time value in seconds for the current cycle.

RO

CRC_IN

UDINT

CRC value for data received from the module.

RO

T_U_DIS_SIS_CH_IN Structure

The T_U_DIS_SIS_CH_IN structure includes the following elements:

Element

Data Type

Description

Access

CH_HEALTH1

BOOL

  • 1: The channel is operational.

  • 0: An error has been detected on the channel, which is not operational.

Formula:

CH_HEALTH = not (OC or IC or SC) and SAFE_COM_STS

RO

VALUE2

EBOOL

  • 1: The input is energized.

  • 0: The input is de-energized.

Formula:

VALUE = if (SAFE_COM_STS and not (IC)) then READ_VALUE else 0

RO

OC

BOOL

  • 1: The channel is open or short circuited to ground.

  • 0: The channel is connected and not short circuited to ground.

RO

SC

BOOL

  • 1: The channel is short circuited to a 24 V source, or cross circuited between two channels.

  • 0: The channel is not short circuited to a 24 V source or cross circuited between two channels.

RO

IC

BOOL

  • 1: Invalid channel detected by the module.

  • 0: The channel is declared internally operational by the module.

RO

V_OC

BOOL

Configuration status of the open or short circuit to ground test:

  • 1: Enabled.

  • 0: Disabled.

RO

V_SC

BOOL

Configuration status of the short circuit to 24 V source test:

  • 1: Enabled.

  • 0: Disabled.

RO

1. When the SAFE task on CPU is not in running mode, the data exchanged between the CPU and the module are not updated and CH_HEALTH is set to 0.

2. The VALUE element can be time-stamped by the BMX CRA or the BME CRA.