Rice Lake 920i USB Installation Manual V5.05 - Manual (Page 8)

2 920i Installation Manual
1.0 Introduction
The 920i is a programmable, multi-channel digital
weight indicator/controller. The configuration can be
performed using the front panel, with an attached
USB-type keyboard (or PS/2 keyboard if using serial
interface), or by using the iRev 4 utility.
Custom event-driven programs can be written with the
iRite language up to 512K in program size. These
programs are compiled with an iRite compiler utility,
which can only be downloaded into the indicator. The
RLWS Web Update utility can be used to download
firmware upgrades to a PC from the RLWS web site;
iRev 4 provides functions for installing the new
software into the 920i.
Onboard Features
Note
Choice of interface board (serial or USB)
affects Port2.
Features of the 920i include:
• Support for A/D scale or serial scale inputs. The
maximum number of scale inputs is 28; these can be
combined to represent up to 32 scale configurations.
• Six digital I/O channels on main board, each
configurable as either input or output.
• Four serial ports on main board (Ports 1–4) support
duplex RS-232 up to 115200 bps. Port 2 supports
hardware handshaking and remote keyboard input;
Ports 3 and 4 support 20mA output; Port 4 supports
2-wire RS-485 communications.
• With USB interface card: onboard USB support for
a host PC and the following devices: one flash
drive, two printers, and/or one keyboard
(connecting more than one device requires a USB
hub). The USB interface card applies only to Port 2.
• With serial interface card: external DB-9 and DIN-8
connectors for serial connection to a PC and
attachment of PS/2 remote keyboard. (cannot be
used with the USB card).
• Available in 115 VAC and 230 VAC North
American and European versions.
Other features include:
• 62K of non-volatile RAM can be allocated to
databases using the iRev 4 database editor.
• Configurable print formats can be defined for up to
1000 characters each. These formats are used to
print gross or net weights, truck in/out weights,
setpoint weights, accumulator weights, alert
messages, and header information. Additional print
formats can be created with iRite.
• Six truck modes to store and recall weights for
gross, tare, and net printing. The truck register
contains fields for ID number, weight, and the
transaction time and date. Weights can be stored
permanently or erased at the end of the transaction.
• The setpoint engine supports 31 configurable
setpoint kinds. Setpoints can be arranged in a
sequential batch routine of up to 100 steps. If
setpoints are configured as free running setpoints,
they can be tied to program control. This allows for
simultaneous batching operations to be written with
the iRite language.
The 920i is NTEP-certified for Classes III and III L at
10,000 divisions. See Section 11.14 on page 131 for
more information about additional certifications and
approvals.
Option Cards
The CPU board provides two slots for installing A/D or
other option cards. Additional option cards can be
added using either two-card or six-card expansion
boards connected to the CPU board via the expansion
bus. Available option cards include:
• Single- and dual-channel A/D cards to drive up to
sixteen 350
load cells per A/D card. A/D cards
support both 4- and 6-wire load cell connections.
A/D cards are matched to allow interchangeability
without having to recalibrate the scale. Calibration
includes support for latitude and elevation
compensation, millivolt calibration, and five-point
linearization.
• Single- or dual-channel Analog output card for
0–10 VDC or 0–20 mA tracking of gross or net
weight values.
• Dual-channel serial expansion card provides one
additional RS-485 port or two ports for either
RS-232 or 20mA communications at up to 19200
bps.
• 24-channel digital I/O expansion card.
• 1MB memory expansion card for expanded
database capability.
• Pulse input card for use with pulse count and pulse
rate setpoints.
• Dual-channel analog input card supports 0–10
VDC, 0–20 mA, ambient temperature, and four
types of thermocouple.
• Bus interface cards for Ethernet, EtherNet/IP ™ 1
,
DeviceNet ™ 2
, Allen-Bradley Remote I/O
3
,
Profibus ® DP
4
, and ControlNet ™ 5
networks.
1. EtherNet/IP™ is a trademark of ControlNet International,
Ltd., under license by the Open DeviceNet Vendor
Association.
2. DeviceNet™ is a trademark of the Open DeviceNet Vendor
Association.
3. Allen-Bradley
®
, PLC
®
, and SLC
™
are trademarks of
Allen-Bradley Company, Inc., a Rockwell International
company.
4. Profibus
®
is a registered trademark of Profibus International.
5. ControlNet™ is a trademark of ControlNet International.