Varec 8315 Series manual Communications, 3.1 COM0 J7

8300 Hardware

2.2.3Communications

The Communications installation requires connection of the appropriate communication cable to one of two connectors. The available options include RS-232 and RS-485 communications.

•COM0 (RS-232) (J7)

•COM1 (RS-232 or RS-485) (J5)

•COM1 Transmit Control (RS-232) (J6)

•COM1 Hardware Handshaking Switch (SW1)

• COM1 RS-232/RS-485 Selection Switch (SW2)
• COM1 RS-485 Terminating Resistor Jumper (W2)
Figure 2-10:Com1 J5 Terminal Block
				+	VFIELD
				-
			J5
	EARTH			A/TXD
A B	NEUTRAL
	LINE
	SURGE GND			B/RXD
	+	VFIELD
RS232
	-
COM1
	A/TXD			GND	COM1
RS485	B/RXD
	GND	COM1
	RTS
	CTS
	TXD		J6
	RXD	COM 0		RTS
	GND
	+15V	AUX
	+5V	POWER
	GND
	-15V			CTS
				TXD
				RXD	COM 0
				GND
			J7		AUX
		D=48V		+15V
		D=24V		+5V	POW

2.2.3.1COM0 (J7)

COM0 is an RS-232 port for use in diagnostic testing/local programming or communications to a host system. The

protocol defaults to TankGate Slave at the 9600 baud, 8 data bits, and no parity (for use with ViewRTU or FuelsManager).

Figure 2-11:Com 0 J7 Terminal Block
	EARTH			CTS
A B	NEUTRAL
	LINE
	SURGE GND
RS232	+	VFIELD		TXD
	-
COM1					COM
	A/TXD
RS485	B/RXD			RXD
	GND	COM1
	RTS
	CTS				0
	TXD			GND
	RXD	COM 0
	GND
	+15V	AUX POWER	J7
	+5V
	GND
	-15V				AUX
				+15V
				+5V	POWER
				GND
			J8	-15V
					11