Detailed Description

Description of system words %SW128 to %SW152 on Momentum processors

Word

Symbol

Function

Description

Initial State

%SW128... %SW129

I/O-Bus module health

%SW128.0 is module #1 health; %SW129.15 is module #32 health. If a health bit is set to:

  • 0 = the module is not healthy or the module is not configured

  • 1 = the module is healthy

0

%SW132

I/O compatibility detected error status
NOTE: The content of this word is significant only if %S118 is set to 1.

Meaning of the different bits of the word %SW132.0 to %SW132.15:

  • %SW132.0 to %SW132.14: These bits contain a value from 1 to 64, signifying the network position of the module that cannot be reached. For example, a value of 8 indicates a detected communications failure in accessing the eighth module on the network.

  • %SW132.15:

    • %SW132.15 = 0 indicates a detected general communication stoppage; for example: no power to the module or a break in its input cable.

    • %SW132.15 = 1 indicates that communication is possible, but the I/O bus ID received from the module does not match the module type contained in the configuration for that position.

0

%SW134

I/O-Bus detected error

Meaning of the values of the word %SW134:

  • 0 = no error detected

  • 1 = module ID mismatch

  • 2 = I/O base detected error

  • 3 = missing modules or extra module

  • 4 = bus exchange detected error

NOTE: %SW134 stores the last detected error. The system does not automatically reset this word to 0 when the cause of the detected error o longer exists. You need to set this word to 0 after resolving the cause of the detected error.

0

%SW135

Local I/O detected error

Meaning of the values of the word %SW135:

  • 0 = no error detected

  • 1 = read local I/O base ID detected error

  • 2 = I/O base ID does not match the application configuration

  • 3 = I/O base detected errors

NOTE: %SW135 stores the last detected error. The system does not automatically reset this word to 0 when the cause of the detected error o longer exists. You need to set this word to 0 after resolving the cause of the detected error.

0

%SW137

Modbus slave address - serial port 2

Read-only system word containing the Modbus slave address for serial port number 2.

NOTE: Applies to Momentum processors with 2 serial ports, for example the 171 CBU 78090.

0

%SW138

Messages transmitted - serial port 2

Read-only system word containing the number of messages transmitted to serial port number 2.

NOTE: Applies to Momentum processors with 2 serial ports, for example the 171 CBU 78090.

0

%SW139

Messages received - serial port 2

Read-only system word containing the number of messages received by serial port number 2.

NOTE: Applies to Momentum processors with 2 serial ports, for example the 171 CBU 78090.

0

%SW141... %SW142

IP netmask

These words contain the following data:

  • %SW141: the IP subnet mask low octets

  • %SW142: the IP subnet mask high octets

NOTE: Applies to Momentum processors with an Ethernet port, for example the 171 CBU 98090 and 171 CBU 98091.

0

%SW143... %SW144

IP gateway

These words contain the following data:

  • %SW143: the IP default gateway address - low octets

  • %SW144: the IP default gateway address - high octets

NOTE: Applies to Momentum processors with an Ethernet port, for example the 171 CBU 98090 and 171 CBU 98091.

0

%SW145... %SW147

MAC address

These words contain the following data:

  • %SW145: the MAC address - low octets

  • %SW146: the MAC address - middle octets

  • %SW147: the MAC address - high octets

NOTE: Applies to Momentum processors with an Ethernet port, for example the 171 CBU 98090 and 171 CBU 98091.

0

%SW148

ETH services status

These words contain the following data:

  • %SW148: FDR client status:

    • 0 = not initialized

    • 1 = IP initialized

    • 2 = <not used>

    • 3 = link ETH down

    • 4 = duplicate IP detected

    • 5 = waiting for server

    • 6 = no configuration, or configuration detected error

0

%SW151... %SW152

ETH open connection number

These words contain the following data:

  • %SW151: the number of open connections in server mode

  • %SW152: the number of open connections in client mode

0