ROTRONIC HygroLab - Manual (Page 12)

IN-E-HyLab-V4_11
Rotronic AG
Bassersdorf, Switzerland
Document code Unit
Instruction Manual
Document Type
HygroLab bench top indicator version 4:
instruction manual
Document title
Page 12 of 51
© 2006; Rotronic AG IN-E-HyLab-V4_11
Setting
Value
DHCP or Static Address Static
IP Address 192.168.1.1
Subnet Mask 255.255.255.0
Default Gateway 192.168.1.0
TCP Port 2101
MAC Address 00:40:9D:28:2D:2A
Firmware Release (device) 1.4
User Name (web interface) rotronic
Password (web interface) wlan
Serial Port Configuration Profile TCP Sockets
Basic Serial Settings
Baud Rate 57600
Data Bits 8
Parity None
Stop Bits 1
Flow Control None
4.4 RS-485 multi-drop network (HygroLab 2 and 3)
Both the HygroLab 2 and HygroLab 3 feature a RS-485 connector. When the number of available
PC ports is limited, this connector can be used to connect together up to 64 HygroLab (or other
devices) in a multi-dropped arrangement. In principle, an unlimited number of such networks can
be monitored with the HW4 software, but each RS-485 multi-drop network is limited to 64 devices.
The HygroLab can be used either as a slave or a master, without special configuration. The master
is automatically the device that is directly connected to the PC or LAN by means of a RS-232 port
or TCP/IP port.
RS-485 Address: the RS-485 address is used to identify the individual devices that are connected
to a RS-485 multi-drop and must be unique to each device. This address is part of the HygroLab
communications protocol. The factory default for the RS-485 address is 00. In general, this address
should not be changed manually (see note below). As far as HW4 is concerned, all masters can
share the same RS-485 address. When the HW4 command “Search for RS-485 slaves” is being
used, HW4 automatically changes from 00 to 01 the RS-485 address of any master that has slaves
attached. As a result, all masters end up with the same RS-485 network address (01). In addition,
HW4 automatically changes the RS-485 address of the slaves in each multi-drop from 00 (factory
default) to a unique address ranging from 02 to 64. The same address range (02 to 64) is used
again when there is more than one multi-drop RS485 network.
Notes:
- We recommend using HW4 to give each HygroLab a unique name for easier identification.
- In the situation where an RS-485 network is to be monitored by software other than HW4, you
will have to use HW4 to give each device a unique RS-485 address prior to connecting to the
network.
- If you change an instrument from master to slave, be sure to change the RS address of the
instrument to 00 before establishing the RS-485 connection. Not doing so may prevent HW4
from detecting the instrument. After detecting the instrument, HW4 will automatically change
the RS address to 02 or higher. Please note that HW4 may eventually change the address of
any master with address 00.