Operation on a network, Ethernet local area network, In-e-hl-nt-v2_12 – ROTRONIC HygroLog HL-NT User Manual
Page 37: 2 ethernet local area network
IN-E-HL-NT-V2_12
Rotronic AG
Bassersdorf, Switzerland
Document code
Unit
HygroLog HL-NT data logger:
instruction manual
Instruction Manual
Document Type
Page 37 of 48
Document title
© 2009-2012; Rotronic AG IN-E-HL-NT-V2_12
9. Operation on a network
9.1 Baud rate and communications protocol compatibility
requirements
Depending on the model, devices from ROTRONIC use one of the following Baud rates as the
factory default:
57600 bps: HygroLog HL-NT data logger and docking stations
19200 bps: HygroPalm and HygroLab indicators, HygroFlex and M33 transmitters,
HygroClip Alarm programmable alarm card, HygroClip DI interface, HygroStat MB Thermo-
Hygrostat
IMPORTANT:
All devices connected to the same RS-485 multi-drop network (master and slaves) must
use the same Baud rate and the same communications protocol.
The communications protocol used by the HygroLog HL-NT is compatible with previous
versions of the HygroLog NT and with legacy products such as the HygroFlex 2 or 3. The
HygroLog HL-NT cannot be used in the same RS-485 multi-drop network as a HF4 or HF5
transmitter and similar products that rely on the RO-ASCII communications protocol..
In the case of a docking station with an internal Ethernet (TCP/IP) module, the Baud rate of
the Ethernet module must be the same as the Baud rate of the HygroLog HL-NT used with
the docking station.
Devices and internal Ethernet modules with mismatched Baud rate will not communicate
together.
The Baud rate configuration of a ROTRONIC device can be changed with the Device
Manager function (Digital Interface tab) available from within the HW4 software.
The Baud rate of a Digi internal Ethernet module can be changed only from the module
web interface. See separate document IN-E-TCPIP-Conf_11 (available in PDF format).
9.2 Ethernet local area network
ROTRONIC devices with an Ethernet (TCP/IP) interface presently use an internal module
manufactured by Digi International (Digi Connect ME for a wired connection, Digi Connect WI-ME
for a wireless connection). Both types of module feature a web interface that is used to configure
the module.
IMPORTANT: The TCP/IP settings of any docking station with Ethernet interface should be
configured to be compatible with the local area network. Detailed instructions are provided
separately in document IN-E-TCPIP-Conf_11 (available in PDF format).