Rice Lake 920i User Manual
DeviceNet
Interface for 520, 720i®, 820i® and 920i® Indicators
Installation and
Programming Manual
™
69949
Technical training seminars are available through Rice Lake Weighing Systems.
Course descriptions and dates can be viewed at www.ricelake.com/training
or obtained by calling 715-234-9171 and asking for the training department.
Contents
About This Manual ................................................................................................................................... 1
1.0 Introduction.................................................................................................................................. 1
2.0 Installation ................................................................................................................................... 2
2.1 Installing the DeviceNet Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.1.1 Installing DeviceNet Option in the 720i, 820i or 920i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.1.2 Installing DeviceNet Option in the 520. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 DeviceNet Network Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 DIP Switch Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.4 LED Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.0 Commands ................................................................................................................................... 7
3.1 Output Command Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Input Command Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3 Command Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Return Status and Current Weight as Integer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Display Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Display Gross Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Display Net Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Display Piece Count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Gross/Net Key Press (toggle mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Zero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Display Tare . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Enter Tare (integer) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Acquire Tare (simulate TARE key press) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Clear Tare . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Primary Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Secondary Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Tertiary Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Units Key Press (toggle units) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Print Request . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Display Accumulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Clear Accumulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Push Weight to Accumulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Return Gross as Integer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Return Net as Integer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Return Tare as Integer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Return Piece Count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Return Current Display as Integer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Return Accumulator as Integer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Return Rate of Change as Integer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Return Peak as Integer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Set Batching State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Batch Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
© 2010 Rice Lake Weighing Systems. All rights reserved. Printed in the United States of America.
Rice Lake Weighing Systems is an ISO 9001 registered company.
Specifications subject to change without notice.
May 2010
Batch Pause . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Rice Lake continually offers web-based video training on a growing selection
of product-related topics at no cost. Visit www.ricelake.com/webinars.
Batch Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Batch Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Lock Front Panel of Indicator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Unlock Front Panel of Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Set Digital Output ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Set Digital Output OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Read Digital I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Enable Bus Command Handler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
No Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Reset Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Return Status and Current Weight as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Set Tare as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Read Gross Weight as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Read Net Weight as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Read Tare as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Read Piece Count as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Read Current Display as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Read Accumulator as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Read Rate of Change as Float. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Read Peak Value as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Set Setpoint Value as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Set Setpoint Hysteresis as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Set Setpoint Bandwidth as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Set Setpoint Preact as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Read Setpoint Value as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Read Setpoint Hysteresis as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Read Setpoint Bandwidth as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Read Setpoint Preact as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Set Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Get Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.0 DeviceNet Interface Specifications........................................................................................... 14
DeviceNet Interface Limited Warranty .................................................................................................. 15
ii 520/720i/820i/920i DeviceNet Installation and Programming Manual
About This Manual
W arning
This manual provides information needed to install
and use the Rice Lake Weighing Systems DeviceNet
TM
Interface. The DeviceNet
®
720i
, 820i®, and 920i® indicators to communicate
with a master controller on a DeviceNet network.
Interface allows 520,
1
See
the 520, 720i, 820i, or 920i Installation Manual for
additional installation information and detailed
descriptions of indicator functions.
The DeviceNet Interface is installed inside the
indicator enclosure. Installation in NEMA 4X
stainless steel enclosures permits use in washdown
environments.
Some procedures described in this manual
require work inside the indicator enclosure.
These procedures are to be performed by
qualified service personnel only.
Authorized distributors and their employees
can view or download this manual from the
1. DeviceNet™ is a trademark of the Open DeviceNet
Vendor Association.
Rice Lake Weighing Systems distributor site
www.ricelake.com.
at
1.0 Introduction
The DeviceNet Interface returns weight and status information from a 520, 720i, 820i, or 920i indicator to a
master controller and provides limited control of indicator f un c ti o ns t o th e p ro g ra m me r. Indicator configuration
and calibration cannot be performed through the DeviceNet Interface.
The DeviceNet Interface functions as a Communications Adapter Device (ODVA profile 12) on a DeviceNet
network. It acts as a group-two-only server on the network. At this time only one polled I/O connection is
supported, though DeviceNet also supports explicit, bit-strobed, and change-of-state/cyclic connections. These
connections may be included at a later date.
The master controller sends commands to the indicator through the DeviceNet Interface by writing the
commands in the output command format. The DeviceNet Interface returns the weight and status data in the
input command format. These actions are referred to as polled I/O. See
I/O commands.
Section 3.0 for descriptions of the polled
Introduction 1
2.0 Installation
W arning
The DeviceNet Interface hardware consists of a
dual-board option card. DeviceNet-specific functions
are provided by a DeviceNet module, which is
factory-installed onto a bus adapter card. The bus
adapter card plugs into an open option card slot on the
520, 820i, or 920i CPU board (or expansion board)
and provides power and access from the indicator bus
to the DeviceNet module.
This section describes the procedures used to install
the DeviceNet Interface into the
indicators, connect communications cables, and set
the baud rate and node address DIP switch on the
DeviceNet module.
2.1 Installing the DeviceNet Interface
Use the following procedure to install the DeviceNet
Interface into
520, 820i, and 920i indicators.
520, 820i, and 920i
Figure 2-1. Option Installed on 820i CPU Board
2.1.1 Installing DeviceNet Option in the 720i, 820i or 920i
Use the following procedure to install the DeviceNet
Interface in the
720i, 820i or 920i indicator:
1. Disconnect indicator from power source.
Disconnect power before removing indicator
backplate.
The 820i and 920i have no on/off switch.
Before opening the unit, ensure the power
cord is disconnected from the power outlet.
2. Open indicator enclosure. For indicator models
with backplates, place indicator face-down on
an antistatic work mat. Remove screws that
hold the backplate to the enclosure body.
Use a wrist strap to ground yourself and
protect components from electrostatic
discharge (ESD) when working inside the
indicator enclosure.
3. Carefully align the large connector (J1) on the
bus adapter card with connector J6 on the
J12 on the
board. Press
720i, or J5 or J6 on the 920i CPU
down to seat the bus adapter card
820i,
in the CPU board connector .
4. Use the screws and lockwashers provided in
the option kit to secure the other end of the
option card to the threaded standoffs on the
CPU board (see Figures
2-1 and 2-2).
5. Wire the card to the network as described in
Section 2.2 on page 4.
6. Set DIP switch as described in Section 2.3 on
page 4.
7. Use cable ties to secure loose cables inside the
enclosure.
Figure 2-2. Option Installed on 920i CPU Board
8. For indicator models that include a backplate,
position the backplate over the enclosure and
reinstall the backplate screws. For the
920i desktop and universal models, use the
torque pattern shown in
Figure 2-3 to prevent
820i or
distorting the backplate gasket. Torque screws
to 15 in-lb (1.7 N-m).
16 12
14
Torque backplate screws
5
3
1
17
Figure 2-3. 820i/920i Enclosure Backplate
to 15 in-lb (1.7 N-m)
9
8
7
10
11
18
13
6
2
4
15
2 520/720i/820i/920i DeviceNet Installation and Programming Manual
9. Ensure no excess cable is left inside the
J2
TEST
3.3V
GND
J1
V+
V–
CAN_L
CAN_H
SHIELD
DeviceNet
Module
LED Array
DIP Switch
W arning
Cover Plate
Standoffs
enclosure and tighten cord grips.
10. Reconnect power to the indicator. The
indicator automatically recognizes all
installed option cards when the unit is
powered on. No hardware-specific
configuration is required to identify the
newly-installed DeviceNet Interface to the
system.
3. Carefully align the large option card
connector with connector J2 on the CPU
board (see
Figure 2-5). Press down to seat the
option card in the CPU board connector.
Figure 2-5. Option Installed on 520 CPU Board
4. Use screws provided in the option kit to
secure the other end of the option card to the
threaded standoffs on the CPU board.
5. Install terminal block end of cable assembly
to DeviceNet option card.
6. Remove existing cover plate.
7. Re-use kep nuts to secure DeviceNet cover
plate to standoffs located on inside of
enclosure backplate (see
Figure 2-6).
8. Once cabling is complete, position the cover
over the enclosure and reinstall the screws.
9. Reconnect power to the indicator.
Figure 2-4. Bus Adapter Card and DeviceNet Module
2.1.2 Installing DeviceNet Option in the 520
Use the following procedure to install the DeviceNet
Interface in the
520 indicator:
1. Disconnect indicator from power source.
Disconnect power before removing
indicator enclosure cover.
The 520 has no on/off switch. Before
opening the unit, ensure the power cord is
disconnected from the power outlet.
2. Place indicator on an antistatic work mat.
Remove screws that hold the enclosure cover
to the enclosure body.
Use a wrist strap to ground yourself and
protect components from electrostatic
discharge (ESD) when working inside the
indicator enclosure.
Figure 2-6. DeviceNet Cable Assembly
10. The indicator automatically recognizes all
installed option cards when the unit is
powered on. No hardware-specific
configuration is required to identify the
newly-installed DeviceNet interface to the
system.
Installation 3
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