16 Port Multi-Function I/O module

Characteristics

This module type is configured for communication with Digi's 16-Port Multi-Function I/O Modules. They consist of 8 physical inputs and 8 physical outputs. Inputs may be defined as data type digital, analog, or pulse through the Automation Control application. Outputs are of type digital.

Communications

Digi's 16-port multi-function I/O module uses 2-wire RS485 communications with a proprietary protocol. Appropriate settings are all pre-configured on TR2-/TR2+ (pins 15 & 16) of the Z45 Controller.

Addressing

Addresses for 16-port I/O modules are hexadecimal numbers between 1 and FF. Modules are shipped from the factory with a default address of 99.

Resetting an Unknown Address

To address a module with an unknown address perform the following steps

  1. Disconnect all I/O modules except for the one having the unknown address.

  2. Enter the text “default” for the address of the first physical (16-port) Multi-Function I/O module on the screen.

  3. Click Save. The connected module is given the address of "99" by default.

  4. Change the address of the target module to the desired address.

  5. Click Save.

Note If multiple modules are connected during the default addressing described above, all will be set to address 99.

Replacing a 16-port Multi-Function I/O module

To replace an I/O module while retaining its current configuration perform the following steps

  1. Remove the module to be replaced from the RS485 string.

  2. Remove any module on the RS485 string having the address of 99.

  3. Connect the new (replacement) module to the string.

  4. Assign an address of 99 to that module.

  5. Click Save.

  6. Assign the desired address to that module.

  7. Click Save.

  8. Reconnect previously disconnected modules.