I-7521 Addressable RS-485 to RS-232/RS-485 Converter, 2 DI/3 DO
Addressable RS-485 to RS-232/RS-485 converter that gives local RS-232 devices a network address on an RS-485 bus, with 2 digital inputs and 3 open-collector outputs.
- Addresses RS-232 devices installed on an RS-485 network
- Master-type design that does not require a host PC to operate
- Supports dual-watchdog commands
- Power-up and safe values for digital outputs
- Real-time monitoring and control of onboard DI/DO
- 1 KB queue buffer for each RS-232 interface
1.315,46 kr. pr. stk.
| 1–9 stk. | 1.315,46 kr. | |
|---|---|---|
| 10–30 stk. | 1.270,61 kr. | −3 % |
| 31+ stk. | 1.248,19 kr. | −5 % |
Produktinformation "I-7521 Addressable RS-485 to RS-232/RS-485 Converter, 2 DI/3 DO"
The I-7521 CR lets a host PC address individual RS-232 devices on an RS-485 network. The converter removes the address field from incoming commands and passes the remaining command to its local RS-232 port, then returns the device's reply to the host over RS-485. This makes it practical to attach several serial devices to one multidrop bus.
Unlike slave-type converters, which depend on the host PC to function, this master-type unit can act on its own. It supports dual-watchdog commands, power-up and safe values for the digital outputs, and real-time monitoring and control of the onboard I/O. Each RS-232 interface has a 1 KB queue buffer.
The CR variant has a blue cover and is supplied with 2 digital inputs (dry contact, non-isolated) and 3 open-collector digital outputs rated for +30 VDC and 100 mA. The RS-485 port is isolated to 3000 VDC, and the unit accepts +10 to 30 VDC input with reverse polarity protection. It is rated for -25 to +75 °C and mounts on DIN-rail or wall.
Applications
- Connecting RS-232 devices to a shared RS-485 network with individual addressing
- Retrofitting serial devices into multidrop RS-485 installations
- Local digital input and output monitoring and control alongside serial communication
| Product type: | Serial converter |
|---|---|
| Interface: | RS-232, RS-485 |
| Digital inputs: | 2 |
| Digital outputs: | 3 |
| Ports: | 2 |
| Isolation: | 3000 VDC (RS-485) |
| Power input: | +10 ~ 30 VDC |
| Operating temperature: | -25 ~ +75 °C |
| Mounting: | DIN-rail, Wall |
Specifikationer
| CPU Module | |
|---|---|
| CPU | 80188 or compatible, 20 MHz |
| Flash | 512 KB |
| SRAM | 128 KB |
| Watchdog Timer | Yes |
| Digital Input | |
| Channels | 2 |
| Type | Dry Contact, Non-isolated |
| ON Voltage Level | Close to GND |
| OFF Voltage Level | Open |
| Digital Output | |
| Channels | 3 |
| Type | Open Collector |
| Load Voltage | +30 VDC |
| Load Current | 100 mA |
| COM Ports | |
| Ports | 1 x RS-485 (3000 VDC Isolated) 1 x RS-232/RS-485 (DB-9 male) |
| Baud Rate | 115200 bps Max. |
| Power | |
| Reverse Polarity Protection | Yes |
| Input Range | +10 ~ 30 VDC |
| Consumption | 2.0 W |
| Mechanical | |
| Dimensions (mm) | 72 x 119 x 33 (W x H x D) |
| Installation | DIN-Rail, Wall mounting |
| Environment | |
| Operating Temperature | -25 ~ +75 °C |
| Storage Temperature | -40 ~ +80 °C |
| Humidity | 5 ~ 90 % RH |
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