The R4PLB04 is a culmination of over ten years of development in RS485 I/O by eletechsup. Despite its small size, it boasts powerful functionality. In addition to basic RS485 I/O functions, it also features counting, watchdog timer, jogging, self-locking, and interlocking capabilities.

1. Configurable NPN/PNP level input(Registers 0x00F1)

2. Configurable PNP/NPN level output(Registers 0x00F2)

3. Counts input pulses (registers 0x0020-0x0023)

4. Multiple Output control modes: inching, self-locking, and interlocking

(Registers 0x0000-0x0003)

5. Watchdog function (Register 0x00F3)

6 Remote IO function (Registers 0x00F5-0x00F6)

7 Automatic reporting of digital input(DI) status(Register 0x00F8)

8 Input and output relationship（DI-DO relationship）(Register 0x00FA)

Input port pulse counting function:

DI Counter(registers 0x0020-0x0023):

Record the number of DI pulses greater than 100MS. Pulses less than 100MS will be ignored.

The initial value is 0 or set by the DI Counter Setting (0x0040-0x0043) Register.

DI Counter Setting(registers 0x0040-0x0043):

If the written value is less than the DI Counter (0x0020-0x0023) value, the DI Counter value will automatically subtract the DI Counter Setting (0x0040-0x0043) value.

If the written value is greater than the DI Counter (0x0020-0x0023) value, the DI Counter value will be reset to 0

DI Counter Pulse Width(registers 0x0060-0x0063):

The setting value is 0-199, unit is 10MS. Default value is 10. The pulse width can be set through this register.

For example: if the setting value is 10, pulses less than 100MS will be ignored, and pulses greater than 100MS will be counted.

How to set up remote control:

1The RS485 address and baud rate must be the same (it is recommended to restore both boards to factory settings).

2 Enable Remote IO Receiver: 01 06 00 F6 00 01 A8 38

3 Enable  Remote IO Sender : 01 06 00 F5 00 01 58 38

For more details, please download the instruction manual.