Tiny Addressable (2x RS-232) to RS-485 Converter
The tM-752N series supports the DCON protocol (compatible with I-752N series), allowing users to modify the settings of the module, such as the serial port configuration and the operation mode, etc. The module also has a built-in web server which provides an intuitive web management interface that simplifies the configuration of the module.
The tM-752N series module is equipped with a 1 KB queue buffer for its local RS-232 device. All data can be stored in the queue buffer until the host PC has time to read it. This feature allows the host PC to link to many low-speed RS-232 devices without suffering any data loss, and also makes it easier for baud rate converter applications to be implemented.
The built-in Self-Tuner ASIC on an RS-485 port can automatically detect and control the send/receive direction of the RS-485 network. Consequently, there is no need for application programs to be concerned with direction control of the RS-485 network.
Most RS-232 devices don’t support device addressing. The ICP DAS tM-752N series module assigns a unique address for each RS-232 device installed. When a command with a device address is sent to the RS-485 network, the destination tM-752N module removes the address field, and then passes the commands to the specified local RS-232 device. The response from the local RS-232 device will be returned to the host PC via the tM-752N.
| tM-752N | ||||||||
|---|---|---|---|---|---|---|---|---|
| Model | RS-232 | RS-485 | CPU | Ethernet | Baud Rate | COM1 | COM2 | COM3 |
| tM-7521 | 1 | 1 | 32-bit ARM | 10/100 Base-TX, PoE | 115200 bps | 2-wire RS-485 | 5-wire RS-232 | - |
| tM-7522 | 2 | 1 | 32-bit ARM | 10/100 Base-TX, PoE | 115200 bps | 2-wire RS-485 | 3-wire RS-232 | 3-wire RS-232 |
| CPU Module | |
|---|---|
| CPU | 32-bit ARM |
| Ethernet | |
|---|---|
| Ports |
10/100 Base-TX, 8-pin RJ-45 x 1 (Auto-negotiating, Auto-MDI/MDIX, LED indicator) PoE (IEEE 802.3af, Class 1) |
| COM Ports | |
|---|---|
| Ports |
1 x RS-485 2 x 3-wire RS-232 |
| Baud Rate | 115200 bps Max. |
| Bias Resistor | Yes, 10 KΩ |
| Parity | None, Odd, Even, Mark, Space |
| Data Bit | 5, 6, 7, 8 |
| Stop Bit | 1, 2 |
| Node Address | 32 (max.) |
| Power | |
|---|---|
| Consumption | 0.07 A @ 24 VDC |
| Powered from PoE | IEEE 802.3af, Class 1 |
| Powered from Terminal Block | +12 ~ 48 VDC |
| Mechanical | |
|---|---|
| Casing | Plastic |
| Dimensions (mm) | 52 mm x 27 mm x 95 mm (W x L x H) |
| Installation | DIN-Rail Mounting |
| Environment | |
|---|---|
| Operating Temperature | -25 ~ +75 °C |
| Storage Temperature | -30 ~ +80 °C |
| Humidity | 10 ~ 90% RH, non-condensing |