©Yokogawa Corporation of America
2 Dart Road, Newnan, GA 30265
770-254-0400
IM 61A YHC1-E-A
1st Edition: Feb. 2008
Page 24 of 34
In general, the Generic HART mode operates similarly to its device specific DOF counterpart (see HART
Communication section of this manual for more details). However, the YHC does not display Device Specific
related communication menus or options when in the Generic communication mode. For example, the Zero and
Sensor trim menu options (normally executed by Device Specific commands) are not displayed for pressure
transmitters without DOF support. Please see the
Download Site
section of this manual for information on
downloading the latest Device Specific DOF files to your YHC.
Updating the YHC 4150X Firmware and DOFs
Overview
Firmware upgrades and new DOFs can be downloaded via the Internet in either of two ways. The first way is
to use the DPC Manager utility (shipped with each YHC or downloaded from the DOF Download Site) on a
PC with Internet access to download files from the DOF Download Site automatically and then update the
YHC. The second way is to use the DOF Download Site to download the needed files to the host PC and
then use the DPC Manager utility to coordinate the update of the YHC. The Download Site enables users to
stay current as new DOF’s or revisions of existing ones are posted. Automatic email notices of new DOF
postings are sent to all users who have logged on to the Download Site and registered their email address
under “Subscriber Options.” Firmware updates are free of charge. DOFs are available by subscription.
A list of currently available DOF’s for HART device communication can be viewed at the
http://dpcupdates.1911mptdofs.com/past.aspx
Who has access to the Download Site?
All YHC customers can purchase a subscription to the DOF Download Site. These customers may
download any published file from the site to their host PC upon entry of the proper authenticating
codes (User Name and Password shipped with each unit). Contact Yokogawa at 770.254.0400 or
for more information and to purchase subscriptions.
PC Requirements for Download Operations
Yokogawa recommends IBM compatible Pentium I PCs or higher for download operations. The PC
should have an available RS-232 port, minimum modem speed of 28K and access to Internet service.
USB ports can be used with USB to serial adapters as well. The RS-232 port must not be shared with
other software applications during update operations.
Preparing the YHC
All YHC models come ready to connect to an IBM compatible PC. Connect the supplied
Communication / AC Adapter Dongle (P/N Z4150-10A) to the YHC. Connect the Dongle to the PC
using the supplied six-foot male DB-9 to female DB-9 cable (P/N ZA90047-00052). Similar cables
are acceptable. Provide power to the Dongle using the supplied AC Adapter (P/N Z9B000007). The
YHC is ready for download operations.
Warning: To avoid damage to a PC serial port, do not connect the YHC’s HART leads to an AC powered
HART device while the YHC is on AC power and a serial cable is connected to a PC. Yokogawa
recommends disconnecting the HART leads from the YHC prior to any communication activity.
