Allen-Bradley 1790D-T16BV0 CompactBlock LDX DeviceNet Digital Base Block
The 1790D-T16BV0 is a 24 VDC 16-point universal DC digital input base block from Allen-Bradley's CompactBlock LDX I/O family. It features built-in DeviceNet network connectivity and removable screw-terminal blocks for field signal wiring. Operating as a standalone node or expanded system, the unit accepts sinking or sourcing 24 VDC input signals to interface field sensors directly with DeviceNet control networks.
Universal Sinking/Sourcing Digital Inputs
The 16 digital input points are organized into two groups of eight channels. Each group features a dedicated common pin (COM 0 for inputs 0–7 and COM 1 for inputs 8–15), allowing independent configuration for either sinking or sourcing wiring topologies. Wiring COM 0 or COM 1 to field 24 VDC (+) configures sourcing inputs, while connecting to field power ground (-) configures sinking inputs.
DeviceNet Communication and Network Addressing
Integrated directly into the base block, the DeviceNet port eliminates the need for separate communication adapters. Network node addresses (0 to 63) are set via hardware rotary switches or configured remotely through RSNetWorx for DeviceNet software. The module supports automatic baud rate detection for standard DeviceNet communication speeds of 125 kbps, 250 kbps, and 500 kbps.
Expandability and Mechanical Installation
Designed for space-restricted enclosures, the open-style block mounts on standard DIN rails or directly onto panel surfaces. Terminal screw connections simplify field wiring and maintenance. The base block can power and communicate with CompactBlock LDX expansion I/O blocks using an integral expansion bus connector, enabling local I/O capacity expansion at a single network node.
Specifications
| Parameter | Specification |
|---|---|
| Model | 1790D-T16BV0 |
| Brand | Allen-Bradley |
| Product Family | CompactBlock LDX |
| Module Type | DeviceNet Digital Input Base Block |
| Number of Inputs | 16 universal DC inputs |
| Input Logic | Sinking or Sourcing (selectable by channel group) |
| Nominal Voltage | 24 VDC |
| Operating Voltage Range | 9.6 to 28.8 VDC |
| Network Interface | DeviceNet (built-in) |
| Communication Rates | 125 kbps, 250 kbps, 500 kbps (Autobaud) |
| Node Address Configuration | Rotary switches (0–63) or software configuration |
| Termination Type | Screw terminals |
| Enclosure Rating | IP20 |
| Mounting | DIN Rail or Panel Mount |
| Operating Temperature | 0 to 55 deg C (32 to 131 deg F) |
| Storage Temperature | -40 to 85 deg C (-40 to 185 deg F) |
| Isolation | 1250 VAC rms between user power and DeviceNet |
| Dimensions | 52 x 104 x 42 mm (2.03 x 4.07 x 1.64 in) |
| Weight | 0.35 lbs (0.16 kg) |
Frequently Asked Questions
Q: Can the 1790D-T16BV0 handle both PNP (sourcing) and NPN (sinking) sensors simultaneously? A: Yes. The 16 inputs are divided into two 8-channel groups (inputs 0–7 and 8–15), each with its own common wire terminal (COM 0 and COM 1), allowing one group to be wired as sinking and the other as sourcing if needed.
Q: How is the DeviceNet node address set on the 1790D-T16BV0 base module?A: Node addresses can be selected manually using the built-in rotary switches prior to powering up, or assigned digitally over the network using RSNetWorx for DeviceNet software.
Allen-Bradley 1790D-T16BV0 CompactBlock LDX DeviceNet Digital Base Block
Allen-Bradley 1790D-T16BV0 CompactBlock LDX DeviceNet Digital Base Block
The 1790D-T16BV0 is a 24 VDC 16-point universal DC digital input base block from Allen-Bradley's CompactBlock LDX I/O family. It features built-in DeviceNet network connectivity and removable screw-terminal blocks for field signal wiring. Operating as a standalone node or expanded system, the unit accepts sinking or sourcing 24 VDC input signals to interface field sensors directly with DeviceNet control networks.
Universal Sinking/Sourcing Digital Inputs
The 16 digital input points are organized into two groups of eight channels. Each group features a dedicated common pin (COM 0 for inputs 0–7 and COM 1 for inputs 8–15), allowing independent configuration for either sinking or sourcing wiring topologies. Wiring COM 0 or COM 1 to field 24 VDC (+) configures sourcing inputs, while connecting to field power ground (-) configures sinking inputs.
DeviceNet Communication and Network Addressing
Integrated directly into the base block, the DeviceNet port eliminates the need for separate communication adapters. Network node addresses (0 to 63) are set via hardware rotary switches or configured remotely through RSNetWorx for DeviceNet software. The module supports automatic baud rate detection for standard DeviceNet communication speeds of 125 kbps, 250 kbps, and 500 kbps.
Expandability and Mechanical Installation
Designed for space-restricted enclosures, the open-style block mounts on standard DIN rails or directly onto panel surfaces. Terminal screw connections simplify field wiring and maintenance. The base block can power and communicate with CompactBlock LDX expansion I/O blocks using an integral expansion bus connector, enabling local I/O capacity expansion at a single network node.
Specifications
| Parameter | Specification |
|---|---|
| Model | 1790D-T16BV0 |
| Brand | Allen-Bradley |
| Product Family | CompactBlock LDX |
| Module Type | DeviceNet Digital Input Base Block |
| Number of Inputs | 16 universal DC inputs |
| Input Logic | Sinking or Sourcing (selectable by channel group) |
| Nominal Voltage | 24 VDC |
| Operating Voltage Range | 9.6 to 28.8 VDC |
| Network Interface | DeviceNet (built-in) |
| Communication Rates | 125 kbps, 250 kbps, 500 kbps (Autobaud) |
| Node Address Configuration | Rotary switches (0–63) or software configuration |
| Termination Type | Screw terminals |
| Enclosure Rating | IP20 |
| Mounting | DIN Rail or Panel Mount |
| Operating Temperature | 0 to 55 deg C (32 to 131 deg F) |
| Storage Temperature | -40 to 85 deg C (-40 to 185 deg F) |
| Isolation | 1250 VAC rms between user power and DeviceNet |
| Dimensions | 52 x 104 x 42 mm (2.03 x 4.07 x 1.64 in) |
| Weight | 0.35 lbs (0.16 kg) |
Frequently Asked Questions
Q: Can the 1790D-T16BV0 handle both PNP (sourcing) and NPN (sinking) sensors simultaneously? A: Yes. The 16 inputs are divided into two 8-channel groups (inputs 0–7 and 8–15), each with its own common wire terminal (COM 0 and COM 1), allowing one group to be wired as sinking and the other as sourcing if needed.
Q: How is the DeviceNet node address set on the 1790D-T16BV0 base module?A: Node addresses can be selected manually using the built-in rotary switches prior to powering up, or assigned digitally over the network using RSNetWorx for DeviceNet software.
