Rice Lake PROFIBUS DP Assembly instructions

69948
Profibus
®
DP
Interface for 520 and 920i
™
Indicators
Installation and
Programming Manual
R

Copyright © 2003 Rice Lake Weighing Systems. All rights reserved. Printed in the United States of America.
Specifications subject to change without notice.
April 2003
Technical training seminars are available through Rice Lake Weighing Systems.
Course descriptions and dates can be viewed at www.rlws.com 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 Profibus DP Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.2 Profibus Network Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.3 Address and Termination Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.4 LED Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.0 Commands................................................................................................................................... 5
3.1 Output Command Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2 Input Command Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.3 Command Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Return Status and Current Weight as Integer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Display Channel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Display Gross Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Display Net Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Display Piece Count. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Gross/Net Key Press (toggle mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Zero. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Display Tare. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Enter Tare (integer). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Acquire Tare (simulate TARE key press). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Clear Tare . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Primary Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Secondary Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Tertiary Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Units Key Press (toggle units). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Print Request. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Display Accumulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Clear Accumulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Push Weight to Accumulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Return Gross as Integer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Return Net as Integer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Return Tare as Integer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Return Piece Count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Return Current Display as Integer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Return Accumulator as Integer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Return Rate of Change as Integer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Return Peak as Integer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Set Batching State. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Batch Start. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Batch Pause . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Batch Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Batch Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Lock Front Panel of Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Unlock Front Panel of Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Set Digital Output ON. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

ii 520/920i Profibus DP Installation and Programming Manual
Set Digital Output OFF. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Read Digital I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
No Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Reset Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Return Status and Current Weight as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Set Tare as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Read Gross Weight as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Read Net Weight as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Read Tare as Float. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Read Piece Count as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Read Current Display as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Read Accumulator as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Read Rate of Change as Float. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Read Peak Value as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Set Setpoint Value as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Set Setpoint Hysteresis as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Set Setpoint Bandwidth as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Set Setpoint Preact as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Read Setpoint Value as Float. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Read Setpoint Hysteresis as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Read Setpoint Bandwidth as Float. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Read Setpoint Preact as Float . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.0 GSD File...................................................................................................................................... 12
5.0 Profibus Interface Specifications.............................................................................................. 14
Profibus Interface Limited Warranty...................................................................................................... 15

Introduction 1
About This Manual
This manual provides information needed to install
and use the Rice Lake Weighing Systems
Profibus
®
-DP Interface. The Profibus-DP Interface
allows
520
and
920i
indicators to communicate with a
Profibus master device using the Profibus-DP
communications standard.
1
See the
520
or
920i
Installation Manual for additional installation
information and detailed descriptions of indicator
functions.
The Profibus DP 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
Rice Lake Weighing Systems distributor site
at
www.rlws.com
.
1.0 Introduction
The Profibus-DP Interface functions as a slave node to
a Profibus-DP master. The Interface returns weight
and status information from a
520
or
920i
indicator to
a master device and provides limited control of
indicator functions to the programmer. Indicator
configuration and calibration cannot be performed
through the Profibus-DP Interface.
The Profibus-DP master sends commands to the
indicator through the Profibus-DP Interface by writing
the commands in the output format. The Profibus-DP
Interface returns the weight and status data in the
input format. These actions are referred to as cyclic
I/O. See Section 3.0 on page 5 for descriptions of the
cyclic I/O commands.
A CD-ROM containing the GSD file used to configure
the master device is supplied with the Profibus-DP
Interface. A printed version of the GSD file is
included in Section 4.0 on page 12.
1. Profibus
®
is a registered trademark of Profibus International.
Warning

2 520/920i Profibus DP Installation and Programming Manual
2.0 Installation
The Profibus DP Interface hardware consists of a
dual-board option card. Profibus-specific functions are
provided by a Profibus module, which is
factory-installed onto a bus adapter card. The bus
adapter card plugs into an open option card slot on the
520
or
920i
CPU board (or expansion board) and
provides power and access from the indicator bus to
the Profibus module.
This section describes the procedures used to install
the Profibus DP Interface into the
520
and
920i
indicators, connect communications cables, and set
the address and bus termination switches on the
Profibus module.
2.1 Installing the Profibus DP Interface
Use the following procedure to install the Profibus DP
Interface into
520
and
920i
indicators.
1. Disconnect indicator from power source.
Disconnect power before removing
indicator backplate.
The
520
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 J5 or J6 on the
920i
CPU board or connector J2 on the
520
CPU board. Press down to seat the bus adapter
card 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 3.
6. Set address switches and termination switch
as described in Section 2.3 on page 3.
7. Use cable ties to secure loose cables inside the
enclosure.
Figure 2-1. Option Installed 520 CPU Board
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
distorting the backplate gasket. Torque screws
to 15 in-lb (1.7 N-m).
Figure 2-3. 920i Enclosure Backplate
Warning
Caution
1
3
5
14
17
16 12
9
8
7
10
11
18
15
4
2
6
13
Torque backplate screws
to 15 in-lb (1.7 N-m)

Installation 3
9. Ensure no excess cable is left inside the
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 Profibus DP Interface to the
system.
Figure 2-4. Bus Adapter Card and Profibus Module
2.2 Profibus Network Connections
Connections to the Profibus network are made at
connector on the Profibus module (see Figure 2-4).
Feed Profibus network cable through cord grip. Allow
enough cable for routing along inside of enclosure to
connector on the Profibus module. Connect network
cables to connector on the Profibus module, then use
cable ties to secure network cables to the cable tie
mounts.
Table 2-1 describes each of the connector pins. +5V
and GND pins are used for bus termination. Some
devices, including optical transceivers, may require
connection to these pins. The RTS line is used in
some equipment to determine direction of
transmission. Most applications use only the A-LINE,
B-LINE, and SHIELD connections.
Baud Rate
The baud rate is set during configuration of the master
and is automatically detected by the Profibus
Interface. Baud rates supported include: 9.6K, 19.2K,
45.45K, 93.75K, 187.5K, 500K, 1.5M, 3M, 6M or
12Mbps.
2.3 Address and Termination Switches
The Profibus Interface address and bus termination are
set using switches on the Profibus module. Figure 2-5
shows the address and termination switches.
Figure 2-5. Profibus Module Switches
Termination Switch
If the Profibus Interface is the first or last module on
the bus, set the termination switch ON. Otherwise, set
the switch OFF to disable bus termination.
Address Switches
Two rotary switches are used to set the decimal node
address, 1–99, of the Profibus Interface (Address 0 is
reserved.) Note that the node address cannot be
changed during operation.
The left switch shown in Figure 2-5, marked
x10
, sets
the tens digit; the right switch,
x1
, sets the units digit.
(For example, to set a decimal address of 14, set
x10 =
1,
and
x1 = 4
.)
J2
TEST
3.3V
GND
J1
LED
Indicators
Address
Switches
Termination
Switch
+5 V
B-LINE
GND
A-LINE
RTS
SHIELD
x10 x1
Profibus
Module
Signal Description
+5V +5V, isolated from RS-485 side
GND Ground, isolated from RS-485 side
A-LINE Negative RS-485 RxD/TxD
B-LINE Positive RS-485 RxD/TxD
SHIELD Bus cable shield
RTS Request to send
Table 2-1. Profibus Network Connections
x1
x10
Termination
switch Address
switches

4 520/920i Profibus DP Installation and Programming Manual
2.4 LED Status Indicators
An LED array on the Profibus module provides status
information for troubleshooting. LEDs 2 and 3
provide status indication for the Profibus module;
LED 4 provides Profibus diagnostic information. LED
1 is reserved.
Figure 2-6. Profibus Status LED Module
Table 2-2 summarizes the function of the status LEDs.
A single bi-color LED on the surface of the Profibus
module provides diagnostic information for
debugging the module itself. Table 2-3 lists the
indications provided by the debugging LED.
LED Status Description
LED 2
Online Off Not online
Steady Green Module is online
LED 3
Offline Off Not offline
Steady Red Module is offline
LED 4
Fieldbus
Diagnostics
Off No diagnostics
Flashing Red,
1 Hz Configuration error
Flashing Red,
2 Hz User parameter data error
Flashing Red,
4 Hz Initialization error
Table 2-2. Status LED Indications
12
3
4
Fieldbus
diagnostics
Online
Offline
Status Description
Off No power
Red, 4Hz DPRAM check fault
Red, 2Hz ASIC and FLASH ROM check fault
Red, 1Hz RAM check fault
Green, 2Hz Module not initialized
Green, 1Hz Module initialized and running
Table 2-3. Debugging LED Indications

Commands 5
3.0 Commands
Commands are used by the Profibus master device to
send and receive data from the Profibus Interface as
integer or floating-point data. The master sends eight
bytes in the output format (used to write commands to
the indicator) and reads eight bytes in the input format
(used to read data from the indicator).
Decimal Point Handling
Integer commands return no decimal point information
to the master. For example, a value of 750.1 displayed
on the indicator is returned to the master as 7501.
Floating point commands support decimal point
information with no special handling.
3.1 Output Command Format
To perform a command, the master uses the output
command format to send four 16-bit words to the
Profibus Interface. These four words contain the
command and any parameters necessary to execute it.
The output command format is shown in Table 3-1.
The contents of each output command format word
are described below:
Command number
The number representing the indicator command is
sent in the first word. Table 3-2 lists the commands
that can be specified for
520
and
920i
indicators.
NOTE:
A lockout feature that looks for any change in the
output format data is incorporated into the indicator
receive mechanism to prevent inundation by the same
command. Repeated commands must be separated by
any other valid command/parameter/value combination.
Word Description
Word 1 Command number
Word 2 Parameter
Word 3 Value (MSW)
Word 4 Value (LSW)
Table 3-1. Output Command Format
Decimal Hex Command
0 0x000 Return Status and Weight (integer)
1 0x001 Display Channel
2 0x002 Display Gross Weight
3 0x003 Display Net Weight
4 0x004 Display Count
9 0x009 Gross/Net key press (toggle)
10 0x00A Zero
11 0x00B Display Tare
Table 3-2. 520 / 920i Remote Commands
12 0x00C Enter Tare
13 0x00D Acquire Tare
14 0x00E Clear Tare
16 0x010 Primary Units
17 0x011 Secondary Units
18 0x012 Tertiary Units
19 0x013 Units key press (toggle units)
20 0x014 Print Request
21 0x015 Display Accumulator
22 0x016 Clear Accumulator
23 0x017 Push Weight to Accumulator
32 0x020 Return Gross (integer)
33 0x021 Return Net (integer)
34 0x022 Return Tare (integer)
35 0x023 Return Count
37 0x025 Return Current Display (integer)
38 0x026 Return Accumulator (integer)
39 0x027 Return Rate of Change (integer)
40 0x028 Return Peak (integer)
95 0x05F Set Batching State
96 0x060 Batch Start
97 0x061 Batch Pause
98 0x062 Batch Reset
99 0x063 Batch Status
112 0x070 Lock Indicator Front Panel
113 0x071 Unlock Indicator Front Panel
114 0x072 Set Digital Input ON
115 0x073 Set Digital Input OFF
116 0x074 Read Digital Input Status
253 0x0FD No operation
254 0x0FE Reset Indicator
256 0x100 Return Status as Weight (float)
268 0x10C Set Tare (float)
288 0x120 Read Gross (float)
289 0x121 Read Net (float)
290 0x122 Read Tare (float)
291 0x123 Read Piece Count (float)
293 0x125 Read Current Display (float)
294 0x126 Read Accumulator (float)
295 0x127 Read Rate of Change (float)
Decimal Hex Command
Table 3-2. 520 / 920i Remote Commands (Continued)

6 520/920i Profibus DP Installation and Programming Manual
Parameter value
To allow communication with a multi-scale indicator,
the scale number is sent in the second word of the
output command format. Zero (0) represents the
current scale. Certain commands require a parameter
other than a scale number, such as a slot number,
setpoint number, or other selection parameter. See the
command descriptions in Section 3.3 on page 7 for
specific command requirements.
Value
The third and fourth words of the output format are
used to pass value data on certain commands. Values
entered in these words are treated as unsigned long
integers or floating-point values, depending on the
command.
3.2 Input Command Format
In response to a command, the Profibus Interface
returns data and status information to the master as
four 16-bit words. This information is returned in the
input command format shown in Table 3-3.
The value type can be set for those commands that do
not specify integer or floating point data by sending a
command 0x000 to specify integer data or command
0x100 for floating-point data. The value type is
returned in the status word (bit 14) of the input format.
Command number
The first word echoes the command number. If the
command fails or is not recognized, the negative of
the command number is returned to signal the error.
Status Data
Indicator status data is returned in the second word
(see Table 3-4). Batch commands return batch status
in place of the low byte (see Table 3-5). Setpoint
commands return batch status in the low byte of the
status word and the setpoint number in the high byte.
Value
Weight data is returned to the master in the third and
fourth words of the input command format, depending
on the command and the value type. The weight data
returned is the displayed weight after the command is
executed, unless the command specifies otherwise.
296 0x128 Read Peak (float)
304 0x130 Set Setpoint Value (float)
305 0x131 Set Setpoint Hysteresis (float)
306 0x132 Set Setpoint Bandwidth (float)
307 0x133 Set Setpoint Preact (float)
320 0x140 Read Setpoint Value (float)
321 0x141 Read Setpoint Hysteresis (float)
322 0x142 Read Setpoint Bandwidth (float)
323 0x143 Read Setpoint Preact (float)
Word Description
Word 1 Command number
Word 2 Status
Word 3 Value (MSW)
Word 4 Value (LSW)
Table 3-3. Input Command Format
Decimal Hex Command
Table 3-2. 520 / 920i Remote Commands (Continued)
Word 2
Bit
Indicator Status Data
Value=0 Value=1
00 Error No error
01 Tare not entered Tare entered
02 Not zero Center of zero
03 Weight invalid Weight OK
04 Standstill In motion
05 Primary units Other units
06 Tare not acquired Tare acquired
07 Gross weight Net weight
08 Channel number
(NOTE: Value 0 represents scale #32)
09
10
11
12
13 Not used
14 Integer data Floating point data
15 Positive weight Negative weight
Table 3-4. Indicator Status Data Format
Word 2
Bit
Batch Function Status Data
Value=0 Value=1
00 Digital input 4 OFF
(
520
) Error Digital input 4 ON (
520
) No error
01 Digital input 3 OFF Digital input 3 ON
02 Digital input 2 OFF Digital input 2 ON
03 Digital input 1 OFF Digital input 1 ON
04 Batch not paused Batch paused
05 Batch not running Batch running
06 Batch not stopped Batch stopped
07 Alarm OFF Alarm ON
Table 3-5. Batch Function Status Data Format

Commands 7
3.3 Command Descriptions
NOTE:
For all commands that require a scale number, a
value of 0 indicates the current scale. Unless otherwise
specified, the indicator returns weight and status data for
the specified scale.
Return Status and Current Weight as Integer
Command: 0, 0x000
Parameter: Scale number
Command 0 returns the status and weight of the
specified scale as integer data, without changing the
display. This command also causes the
type-independent commands to return an integer
value.
Display Channel
Command: 1, 0x001
Parameter: Scale number
Command 1 causes the weight of the specified scale to
be displayed and returned in its current mode and
format. This command is valid for the 920i only.
Display Gross Weight
Command: 2, 0x002
Parameter: Scale number
Command 2 causes the gross weight of the specified
scale to be displayed and returned.
Display Net Weight
Command: 3, 0x003
Parameter: Scale number
Command 3 causes the net weight of the specified
scale to be displayed and returned.
Display Piece Count
Command: 4, 0x004
Parameter: Scale number
Command 4 causes the piece count on the specified
scale to be displayed and returned. This command is
valid only for the 520 indicator, and only if count
mode is enabled.
Gross/Net Key Press (toggle mode)
Command: 9, 0x009
Parameter: Scale number
Command 9 toggles between gross and net mode (and
count mode, if enabled). If a scale number other than
0 is specified, the action may not be evident until the
specified scale is displayed.
Zero
Command: 10, 0x00A
Parameter: Scale number
Command 10 performs a zero operation on the current
scale.
Display Tare
Command: 11, 0x00B
Parameter: Scale number
Command 11 causes the tare weight on the specified
scale to be displayed. If a scale number other than 0 is
specified, the indicator first causes the specified scale
to be displayed. The tare data continues being
returned even if the display times out and returns to
another mode.
Enter Tare (integer)
Command: 12, 0x00C
Parameter: Scale number
Value: Tare weight
Command 12 enters a tare for the scale selected. Tare
data must be specified as an integer. The indicator
continues to return weight data in the current mode for
the specified scale.
Acquire Tare (simulate TARE key press)
Command: 13, 0x00D
Parameter: Scale number
Command 13 acquires a tare based on the weight
currently on the specified scale. The indicator
continues to return weight data in the current mode for
the specified scale.
Clear Tare
Command: 14, 0x00E
Parameter: Scale number
Command 14 clears the tare for the specified scale.
The indicator continues to return weight data in the
current mode for the specified scale.
Primary Units
Command: 16, 0x010
Parameter: Scale number
Command 16 switches the current format of the
specified scale to the primary units configured for that
scale.
Secondary Units
Command: 17, 0x011
Parameter: Scale number
Command 17 switches the current format of the
specified scale to the secondary units configured for
that scale.
Tertiary Units
Command: 18, 0x012
Parameter: Scale number
Command 18 switches the current format of the
specified scale to the tertiary units configured for that
scale, if available. This command is valid for the 920i
only.

8520/920i Profibus DP Installation and Programming Manual
Units Key Press (toggle units)
Command: 19, 0x013
Parameter: Scale number
Command 19 toggles the current format of the
specified scale to the next units configured for that
scale, as available.
Print Request
Command: 20, 0x014
Parameter: Scale number
Command 20 causes the indicator to execute a print
command for the current scale.
Display Accumulator
Command: 21, 0x015
Parameter: Scale number
Command 21 causes the value of the accumulator for
the specified scale to be displayed and returned. This
command is only valid if the accumulator for the
specified scale is enabled.
Clear Accumulator
Command: 22, 0x016
Parameter: Scale number
Command 22 clears the value of the accumulator for
the specified scale. This command is only valid if the
accumulator for the specified scale is enabled.
Push Weight to Accumulator
Command: 23, 0x017
Parameter: Scale number
Command 23 adds the net weight on the specified
scale to the value of the accumulator for the specified
scale. The scale must return to net zero between
accumulations. The indicator returns the accumulated
weight data for the specified scale. This command is
only valid if the accumulator for the specified scale is
enabled.
Return Gross as Integer
Command: 32, 0x020
Parameter: Scale number
Command 32 returns the gross weight value for the
specified scale as an integer.
Return Net as Integer
Command: 33, 0x021
Parameter: Scale number
Command 33 returns the net weight value for the
specified scale as an integer.
Return Tare as Integer
Command: 34, 0x0022
Parameter: Scale number
Command 34 returns the tare weight value for the
specified scale as an integer.
Return Piece Count
Command: 35, 0x023
Parameter: Scale number
Command 35 returns the piece count value for the
specified scale. This command is valid only for the
520 indicator, and only if count mode is enabled.
Return Current Display as Integer
Command: 37, 0x025
Parameter: Scale number
Command 37 returns the weight value for the
specified scale as currently displayed. This may
include gross, net, tare, piece count, or accumulator
values, as enabled. On the 920i, the weight value is
returned in the mode used to display a scale widget.
Return Accumulator as Integer
Command: 38, 0x026
Parameter: Scale number
Command 38 returns the accumulator value for the
specified scale. This command is only valid if the
accumulator for the specified scale is enabled.
Return Rate of Change as Integer
Command: 39, 0x027
Parameter: Scale number
Command 39 returns the current rate of change value
for the specified scale. This command is valid only for
the 920i.
Return Peak as Integer
Command: 40, 0x028
Parameter: Scale number
Command 40 returns the net peak value for the
specified scale. This command is valid only for the
520 indicator, and only if the peak hold function is
enabled.
Set Batching State
Command: 95, 0x05F
Parameter: State (0 = off; 1 = auto; 2 = manual)
Command 95 sets the batching (BATCHNG)
parameter. Indicator status is returned with the current
weight for the last scale specified.

Commands 9
Batch Start
Command: 96, 0x060
Parameter: Scale number
Command 96 starts a batch program from the current
step after a stop, pause, or reset. Batch status is
returned with the current weight for the specified
scale.
Batch Pause
Command: 97, 0x061
Parameter: Scale number
Command 97 pauses a batch program at the current
step. Batch status is returned with the current weight
for the specified scale.
Batch Reset
Command: 98, 0x062
Parameter: Scale number
Command 98 stops a batch program and resets it to
the first batch step. Batch status is returned with the
current weight for the specified scale.
Batch Status
Command: 99, 0x063
Parameter: Scale number
Command 99 returns the status of a batch. Batch
status is returned with the current weight for the
specified scale.
Lock Front Panel of Indicator
Command: 112, 0x070
Parameter: Scale number
Command 112 disables all the keys on the front panel
of the indicator. Indicator status is returned with the
current weight for the specified scale.
Unlock Front Panel of Indicator
Command: 113, 0x071
Parameter: Scale number
Command 113 re-enables all the keys on the front
panel of the indicator. Indicator status is returned with
the current weight for the specified scale.
Set Digital Output ON
Command: 114, 0x072
Parameter: Slot number
Value: Bit number
Command 114 sets the specified digital output ON
(active). Use slot number 0 for onboard digital
outputs. Indicator status is returned with the current
weight for the last scale specified.
Set Digital Output OFF
Command: 115, 0x073
Parameter: Slot number
Value: Bit number
Command 115 sets the specified digital output OFF
(inactive). Use slot number 0 for onboard digital
outputs. Indicator status is returned with the current
weight for the last scale specified.
Read Digital I/O
Command: 116, 0x074
Parameter: Slot number
Command 116 returns the status for all digital I/O in
the specified slot in words 3and 4. (On the 520, status
is returned only for the digital inputs.) Use slot
number 0 for onboard digital I/O. Indicator status is
returned in the status area for the last scale specified.
No Operation
Command: 253, 0x0FD
Parameter: Scale number
Command 253 provides a command to use between
operations, as necessary, without causing the indicator
to perform any action. Indicator status and weight for
the specified scale is returned.
Reset Indicator
Command: 254, 0x0FE
Parameter: None
Command 254 provides a command to remotely reset
the indicator. No data is returned.
Return Status and Current Weight as Float
Command: 256, 0x100
Parameter: Scale number
Command 256 returns the status and weight of the
specified scale in floating-point format, without
changing the display. This command also causes the
format-independent commands to return a value in the
floating-point format.
Set Tare as Float
Command: 268, 0x10C
Parameter: Scale number
Value: Tare weight
Command 268 enters a tare for the scale selected in
floating-point format. The indicator returns the tare
weight as taken, or 0 for no tare.
Read Gross Weight as Float
Command: 288, 0x120
Parameter: Scale number
Command 288 returns the gross weight value for the
specified scale in floating-point format.

10 520/920i Profibus DP Installation and Programming Manual
Read Net Weight as Float
Command: 289, 0x121
Parameter: Scale number
Command 289 returns the net weight value for the
specified scale in floating-point format.
Read Tare as Float
Command: 290, 0x122
Parameter: Scale number
Command 290 returns the tare weight value for the
specified scale in floating-point format.
Read Piece Count as Float
Command: 291, 0x123
Parameter: Scale number
Command 291 returns the piece count value for the
specified scale in floating-point format. This
command is only valid for the 520, and only if count
mode is enabled.
Read Current Display as Float
Command: 293, 0x125
Parameter: Scale number
Command 293 returns the weight value for the
specified scale as currently displayed in floating-point
format. This may include gross, net, tare, piece count,
rate-of-change, or accumulator values, as enabled. On
the 920i, the weight value is returned in the mode used
to display a scale widget.
Read Accumulator as Float
Command: 294, 0x126
Parameter: Scale number
Command 294 returns the accumulator value for the
specified scale in floating-point format. This
command is only valid if the accumulator for the
specified scale is enabled.
Read Rate of Change as Float
Command: 295, 0x127
Parameter: Scale number
Command 295 returns the current rate of change value
for the specified scale in floating-point format. This
command is only valid for the 920i.
Read Peak Value as Float
Command: 296, 0x128
Parameter: Scale number
Command 296 returns the net peak value for the
specified scale in floating-point format. This
command is only valid for the 520, and only if the
peak hold function is enabled.
Set Setpoint Value as Float
Command: 304, 0x130
Parameter: Setpoint number
Value: Target value
Command 304 sets the target value for the specified
setpoint in floating-point format. This command is
only valid if the setpoint is enabled and requires a
target value.
Set Setpoint Hysteresis as Float
Command: 305, 0x131
Parameter: Setpoint number
Value: Hysteresis value
Command 305 sets the hysteresis value for the
specified setpoint in floating-point format. This
command is only valid if the setpoint is enabled and
requires a hysteresis value.
Set Setpoint Bandwidth as Float
Command: 306, 0x132
Parameter: Setpoint number
Value: Bandwidth value
Command 306 sets the bandwidth value for the
specified setpoint in floating-point format. This
command is only valid if the setpoint is enabled and
requires a bandwidth value.
Set Setpoint Preact as Float
Command: 307, 0x133
Parameter: Setpoint number
Value: Preact value
Command 307 sets the preact value for the specified
setpoint in floating-point format. This command is
only valid if the setpoint is enabled and requires a
preact value.
Read Setpoint Value as Float
Command: 320, 0x140
Parameter: Setpoint number
Command 320 returns the target value for the
specified setpoint in floating-point format. This
command is only valid if the setpoint is enabled and
requires a target value.
Read Setpoint Hysteresis as Float
Command: 321, 0x141
Parameter: Setpoint number
Command 321 returns the hysteresis value for the
specified setpoint in floating-point format. This
command is only valid if the setpoint is enabled and
requires a hysteresis value.

Commands 11
Read Setpoint Bandwidth as Float
Command: 322, 0x142
Parameter: Setpoint number
Command 322 returns the bandwidth value for the
specified setpoint in floating-point format. This
command is only valid if the setpoint is enabled and
requires a bandwidth value.
Read Setpoint Preact as Float
Command: 323, 0x143
Parameter: Setpoint number
Command 323 returns the preact value for the
specified setpoint in floating-point format. This
command is only valid if the setpoint is enabled and
requires a preact value.

12 520/920i Profibus DP Installation and Programming Manual
4.0 GSD File
;=================================================================
; GSD-File for Profibus Indicator Interface
; Rice Lake Weighing Systems
;
; Version V0.4
;
; Date : 9/18/2002
; File : RLWS088B.GSD
;=================================================================
#Profibus_DP
; <Unit-Definition-List>
GSD_Revision = 1 ; This file works with text readers.
Vendor_Name = "Rice Lake Weighing Systems" ; Manufacturer's name
Model_Name = "Profibus Indicator Interface" ; Equipment supported
Revision = "V1.2" ; Version of the GSD file
Ident_Number = 0x088B ; Profibus Device ID
Protocol_Ident = 0 ; Profibus DP protocol
Station_Type = 0 ; This is a slave device
FMS_supp = 0 ; No FMS support
Hardware_Release = "Serial REV B / Parallel Rev A"
Software_Release = "Serial v1.00 / Parallel v1.12";
9.6_supp = 1 ; These baud rates are supported
19.2_supp = 1
45.45_supp = 1
93.75_supp = 1
187.5_supp = 1
500_supp = 1
1.5M_supp = 1
3M_supp = 1
6M_supp = 1
12M_supp = 1
MaxTsdr_9.6 = 60 ; Time delay needed after a message is sent
MaxTsdr_19.2 = 60
MaxTsdr_45.45 = 250
MaxTsdr_93.75 = 60
MaxTsdr_187.5 = 60
MaxTsdr_500 = 100
MaxTsdr_1.5M = 150
MaxTsdr_3M = 250
MaxTsdr_6M = 450
MaxTsdr_12M = 800
Redundancy = 0 ; Redundancy not supported
Repeater_Ctrl_Sig = 2 ; Repeater control signal TTL
24V_Pins = 0 ; 24 V pins not connected
Implementation_Type = "SPC3"

GSD File 13
; Slave-Specification:
Freeze_Mode_supp = 1 ; Freeze mode is supported
Sync_Mode_Supp = 1 ; Sync-mode is supported
Auto_Baud_supp = 1 ; Auto baud rate detection supported
Set_Slave_Add_Supp = 0 ; Set_Slave Add is not supported
Min_Slave_Intervall = 1 ; 100us between poll cycles of the slave
Modular_Station = 1 ; Modular device (can be set up multiple ways)
Max_Module = 1 ; Maximum number of modules
Max_Input_Len = 8 ; Maximum number of input bytes
Max_Output_Len = 8 ; Maximum number of output bytes
Max_Data_Len = 16 ; Maximum number of bytes transferred
Fail_Safe = 0 ; State CLEAR not accepted
Max_Diag_Data_Len = 6
Modul_Offset = 1 ; First slot number.
Slave_Family = 3@TdF@OTHER ; Function class: I/O
; UserPrmData: Length and Preset:
User_Prm_Data_Len = 0
; <Module-Definition-List>
Module = "4 WORDS I/O Consistent " 0xD3,0xE3
1
EndModule

14 520/920i Profibus DP Installation and Programming Manual
5.0 Profibus Interface Specifications
Power Requirements
Bus Adapter Card with DeviceNet Module, DC Power:
Supply voltage: 6 VDC, supplied by 520/920i bus
Typical current draw: 370 mA
Power consumption: 2.22 W
Indicators, Typical AC Load:
520 Power (TRMS): 4.63 W
Current (TRMS): 42.5 mA
920i Power (TRMS): 3.08 W
Current (TRMS): 41.1 mA
Communications Specifications
Profibus-DP Network Communications:
Twisted-pair cabling at: 9.6K, 19.2K, 45.45K, 93.75K,
187.5K, 500K, 1.5M, 3M, 6M or 12Mbps
Update rate is dependent on the configured baud rate and the
number of network nodes. Maximum update rates are:
520: up to 120 updates/sec
920i: up to 960 updates/sec
Environmental Specifications
Temperature: –10° to +40° C (14° to 104° F)

Profibus Interface Specifications 15
Profibus Interface Limited Warranty
Rice Lake Weighing Systems (RLWS) warrants that all RLWS equipment and systems properly installed by a
Distributor or Original Equipment Manufacturer (OEM) will operate per written specifications as confirmed by
the Distributor/OEM and accepted by RLWS. All systems and components are warranted against defects in
materials and workmanship for one year.
RLWS warrants that the equipment sold hereunder will conform to the current written specifications authorized
by RLWS. RLWS warrants the equipment against faulty workmanship and defective materials. If any equipment
fails to conform to these warranties, RLWS will, at its option, repair or replace such goods returned within the
warranty period subject to the following conditions:
•Upon discovery by Buyer of such nonconformity, RLWS will be given prompt written notice with a
detailed explanation of the alleged deficiencies.
•Individual electronic components returned to RLWS for warranty purposes must be packaged to
prevent electrostatic discharge (ESD) damage in shipment. Packaging requirements are listed in a
publication, “ProtectingYour Components From Static Damage in Shipment,” available from RLWS
Equipment Return Department.
•Examination of such equipment by RLWS confirms that the nonconformity actually exists, and was
not caused by accident, misuse, neglect, alteration, improper installation, improper repair or
improper testing; RLWS shall be the sole judge of all alleged non-conformities.
•Such equipment has not been modified, altered, or changed by any person other than RLWS or its
duly authorized repair agents.
•RLWS will have a reasonable time to repair or replace the defective equipment. Buyer is responsible
for shipping charges both ways.
•In no event will RLWS be responsible for travel time or on-location repairs, including assembly or
disassembly of equipment, nor will RLWS be liable for the cost of any repairs made by others.
THESE WARRANTIES EXCLUDE ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING
WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY OR FITNESS FOR APARTICULAR
PURPOSE. NEITHER RLWS NOR DISTRIBUTOR WILL, IN ANY EVENT, BE LIABLE FOR INCIDENTAL
OR CONSEQUENTIAL DAMAGES.
RLWS AND BUYER AGREE THAT RLWS’SSOLE AND EXCLUSIVE LIABILITY HEREUNDER IS
LIMITED TO REPAIR OR REPLACEMENT OF SUCH GOODS. INACCEPTING THIS WARRANTY, THE
BUYER WAIVES ANY AND ALL OTHER CLAIMS TO WARRANTY.
SHOULD THE SELLER BE OTHER THAN RLWS, THE BUYER AGREES TO LOOK ONLY TO THE SELLER
FOR WARRANTY CLAIMS.
NOTERMS, CONDITIONS, UNDERSTANDING, OR AGREEMENTS PURPORTING TO MODIFY THE
TERMS OF THIS WARRANTY SHALL HAVE ANY LEGAL EFFECT UNLESS MADE IN WRITING AND
SIGNED BY ACORPORATE OFFICER OF RLWS AND THE BUYER.
© 2003 Rice Lake Weighing Systems, Inc. Rice Lake, WI USA. All Rights Reserved.
RICE LAKE WEIGHING SYSTEMS • 230 WEST COLEMAN STREET • RICE LAKE, WISCONSIN 54868 • USA