ROTRONIC HC2 - Manual (Page 12)

E-M-HC2-accessories_24
Rotronic AG
Bassersdorf, Switzerland
Document code Unit
Accessories and Parts
for probes, indicators and transmitters Instruction Manual
Document Type
Page 12 of 23
Document title
© 2009-2010; Rotronic AG E-M-HC2-accessories_23
7 RS-485 converters and junction boxes
7.1 USB / RS-485 converter
Use the AC3010 converter with:
o HF45
o HF53 with digital option
o HF55
o HF65
o HF8 with RS-485 port
IMPORTANT:
1) Do not use the AC3010 with legacy devices or with the HygroLog HL-NT
2) Prior to using the AC3010, the ROTRONIC USB driver must be installed on the PC (available from
the HW4 CD or from www.rotronic-humidity.com). For installation instructions see document
E-M-HW4v3-Main (§ 7.3).
Order Code Description
AC3010
Allows connecting up to 64 RS-485 slave
devices to a USB port The AC3010 itself
does not count as a device on the RS-485
network and does not have a RS-485 address
The AC3010 converter cable is powered
directly from the USB port and does not
require a power supply.
Wire color Function
Red TX+ / RX+ (RS-485 bidirectional)
Blue TX- / RX- (RS-485 bidirectional)
Green V+ (optional connection)
Drain (shield) GND (optional connection)