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==Technical parameters== | ==Technical parameters== | ||
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===Pin assignment=== | ===Pin assignment=== | ||
* AVcc — "+" | *AVcc — "+" power supply module | ||
* AGnd — "-" | *AGnd — "-" module power | ||
* | *485A — line A RS485 (+) | ||
* 485B — | *485B — line A RS485 (+) | ||
* DI_0'''1-8''' — | *DI_0'''1-8''' — digital inputs | ||
* DO_0'''1-8''' — | *DO_0'''1-8''' — digital outputs | ||
The digital outputs are protected by a diode and allow switching relays or indicators connected to the DO and "+" pin of the main power supply. | |||
The digital inputs are galvanically isolated via the optocoupler; a button or switch is connected to the DIx pin and to the "-" of the main power supply of the module. | |||
=== | ===Modbus Registers=== | ||
*Discrete Input registers '''0x00-0x07''' allow you to read the state of digital inputs. | |||
*Coil registers '''0x00-0x07''' allow you to record/read the status of digital outputs. | |||
===Power/Data status light=== | |||
The Power/Data status light is green when power is supplied,it is blinking when data is received and sent, or it is red when an error occurs or when another device is accessed on the bus. | |||
Red indicators DO 1-8 indicate the presence of a logical 1 on the corresponding digital output, and DI 1-8 — on the corresponding digital input. |