https://cablematic.com/en/products/rs485-module-with-8-digital-inputs-and-8-digital-outputs-trp-c29-TI074/
RS485 module with 8 digital inputs and 8 digital outputs (TRP-C29)
- Direct power through the terminals or external power supply via DC jack (source not included).
- Supports ASCII and Modbus RTU protocols.
- Supports data transmission speeds from 1.2 Kbps to 115.2 Kbps
- The 8 digital input channels can be used as counters (Dec. 0 to 65535 or Hex. 0000 to FFFF).
- Optical isolation of digital input signals up to 3750 Vrms.
2 yearswarranty
14 daysreturns
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- Direct power through the terminals or external power supply via DC jack (source not included).
- Supports ASCII and Modbus RTU protocols.
- Supports data transmission speeds from 1.2 Kbps to 115.2 Kbps
- The 8 digital input channels can be used as counters (Dec. 0 to 65535 or Hex. 0000 to FFFF).
- Optical isolation of digital input signals up to 3750 Vrms.
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More info
Device with RS485 interface that has 8 opto-isolated digital inputs and 8 digital outputs. Each channel has a terminal connection and an LED indicating the status of the channel. The input channels are equipped with an opto-isolation DC of up to 3750 Vms. It supports the ASCII and Modbus communication protocols with a complete set of commands, dual watchdog and auto-reset function. The module can be bi-dDirectionally controlled remotely by a PC using either the ASCII protocol or the Modbus RTU.
Specifications
- Direct power through the terminals or external power supply via DC jack (source not included).
- Supports ASCII and Modbus RTU protocols.
- Supports data transmission speeds from 1.2 Kbps to 115.2 Kbps
- The 8 digital input channels can be used as counters (Dec. 0 to 65535 or Hex. 0000 to FFFF).
- Optical isolation of digital input signals up to 3750 Vrms.
- Dual watchdog: in the firmware and in the traffic between the computer.
- Status LED for each of the input and output channels (total 16 LED).
- Supports mounting on DIN rail or directly on the wall.
- It has a dip-switch for configuration and self-test.
- It has connection terminals for the realization of digital input and output connections.
- Logical input level 0: ± 1 V (max).
- Logical input level 1: ± 4 V to ± 30 V.
- Input impedance: 3 Kohm.
- Input counter frequency: 100 Hz.
- Maximum entry distance: 500 m.
- Maximum voltage ofOutput: ± 30 V.
- Maximum output current: 100 mA.
- Consumption: 1.2 W.
- Size: 151 x 75 x 26 mm.
- Weight: 400 g
- Mounted in black metal casing.
- Gross Weight: 410 g
- Number of packages: 1
Technical terms
- Impedance
- DC jack connector
- LED
- Hz
- RS485
- DIN
- DIN Rail
Impedance (Z) is the total opposition that a circuit offers to alternating current (AC) flow when a specific voltage is applied.
Unlike simple resistance, impedance is a complex quantity comprising resistance (the real part) and reactance (the imaginary part, representing inductive or capacitive effects). In the frequency domain, impedance is represented as a phasor, accounting for both magnitude and phase shift between voltage and current. In DC circuits, impedance reduces to pure resistance with zero phase angle.
| Parameter | Technical Spec |
|---|---|
| Symbol | Z |
| Unit | Ohm (Ω) |
Impedance management is critical in high-speed hardware design and signal integrity. In modern PCB manufacturing, controlled impedance ensures that high-frequency signals reach their destination without reflections, which is vital for PCIe or DDR5 performance.
Complex Domain Analysis
Mathematical modeling of impedance using the j-operator allows engineers to optimize filter performance and resonance characteristics in electronic systems.
Key Advantages
- Maximum power transfer through impedance matching.
- Minimized signal reflections in high-frequency transmission lines.
- Improved electromagnetic compatibility (EMC).
Note: Impedance is the cornerstone of modern AC circuit theory and high-frequency design.
