SG-785

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Model: SG-785

SG-785 The RS-485 pull-high/pull-low and termination resistors module

The SG-785 is an optional module that is used to improve the communication of RS-485 network. It provides switch selectable pull-high and pull-low resistors on RS-485 network. It also has 15-step switch selectable termination resistor such that the user can select a proper termination resistor to be connected to the RS-485 network easily.

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Switch selectable pull-high/pull-low resistors
15-step switch selectable termination resistor
LED Indicator for Power/ Termination
DIN-Rail mountable

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RS-485 signal pull-high/pull-low and long distance communication termination resistor setting.

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Interface	RS-485
Pull-high/pull-low Resistance	1k ohm
Termination Resistance	15 steps, 65 ~ 560 ohm
LED Display	1 red LED as power indicator, 1 green LED as termination indicator
Power
Input Range	10 ~ 30 VDC
Power Consumption	0.5 W
Environment
Operating Temperature	-25 °C ~ +75 °C
Storage Temperature	-40 °C ~ +80 °C
Humidity	5 ~ 95% RH, Non-condensing

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SW1	SW2	SW3	SW4	Termination Resistance (ohm)
ON	ON	ON	ON	65
ON	ON	ON	OFF	74
ON	ON	OFF	ON	76
ON	OFF	ON	ON	81
ON	OFF	OFF	ON	99
ON	OFF	ON	OFF	96
ON	ON	OFF	OFF	88
ON	OFF	OFF	OFF	120
OFF	ON	ON	ON	144
OFF	ON	ON	OFF	193
OFF	ON	OFF	ON	207
OFF	ON	OFF	OFF	330
OFF	OFF	ON	ON	256
OFF	OFF	ON	OFF	470
OFF	OFF	OFF	ON	560

SW5	SW6	Termination Resistance (ohm)
ON	OFF	Add a pull high resistor to D+ line
OFF	ON	Add a pull low resistor to D- line
ON	ON	Add a pull high resistor to D+ line and add a pull low resistor to D- line

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SG-785 CR

The RS-485 pull-high/pull-low and termination resistors module (RoHS)

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