Lauda LRZ 926 User manual

Interface module LRZ 926
RS 232/485 Advanced module
Operation manual
V1R13 Read this manual prior to performing any task!

Translation of the original operation manual
Manufacturer:
LAUDA DR. R. WOBSER GMBH & CO. KG
Laudaplatz 1
97922 Lauda-Königshofen
Germany
Telephone: [phone]
Fax: [phone]
E-mail: [email protected]
Internet: https://www.lauda.de
Q4DA-E_13-021, 1, en_US 05/09/2022 ©LAUDA 2022
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Table of contents
1 General................................................................................................................................................................................... 5
1.1 Intended use................................................................................................................................................................... 5
1.2 Compatibility.................................................................................................................................................................. 6
1.3 Technical changes.......................................................................................................................................................... 6
1.4 Warranty conditions...................................................................................................................................................... 6
1.5 Copyright....................................................................................................................................................................... 6
1.6 Contact LAUDA........................................................................................................................................................... 7
2 Safety..................................................................................................................................................................................... 8
2.1 General safety information and warnings................................................................................................................... 8
2.2 Information about the interface module.................................................................................................................... 9
2.3 Personnel qualification.................................................................................................................................................. 9
3 Unpacking............................................................................................................................................................................ 10
4 Device description................................................................................................................................................................ 11
4.1 Purpose.......................................................................................................................................................................... 11
4.2 Structure........................................................................................................................................................................ 11
5 Before starting up................................................................................................................................................................ 12
5.1 Installing the interface module................................................................................................................................... 12
5.2 Using the module box.................................................................................................................................................. 14
6 Commissioning..................................................................................................................................................................... 15
6.1 Contact assignment..................................................................................................................................................... 15
6.1.1 Contact assignment RS 232................................................................................................................... 15
6.1.2 Contact assignment RS 485................................................................................................................... 17
6.2 Software update........................................................................................................................................................... 17
7 Operation............................................................................................................................................................................. 18
7.1 Menu structure............................................................................................................................................................ 18
7.2 Interface functions....................................................................................................................................................... 18
7.2.1 General Information................................................................................................................................. 18
7.2.2 Operating rights....................................................................................................................................... 20
7.2.3 Communication monitoring................................................................................................................... 20
7.2.4 Read commands........................................................................................................................................ 21
7.2.5 Write commands...................................................................................................................................... 26
7.2.6 Availability of the interface functions.................................................................................................... 29
7.2.7 Error messages......................................................................................................................................... 32
7.3 Control and automation software............................................................................................................................. 34
8 Maintenance........................................................................................................................................................................ 35
9 Faults.................................................................................................................................................................................... 36
9.1 Alarm............................................................................................................................................................................ 36
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9.2 Error.............................................................................................................................................................................. 36
9.3 Warning........................................................................................................................................................................ 37
10 Decommissioning................................................................................................................................................................ 38
11 Disposal................................................................................................................................................................................ 39
12 Accessories.......................................................................................................................................................................... 40
13 Technical data....................................................................................................................................................................... 41
14 Index..................................................................................................................................................................................... 42
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1 General
Many types of LAUDA constant temperature equipment have vacant
module slots for installing additional interfaces. The number, size and
arrangement of the module slots vary depending on the device and are
described in the operating manual accompanying the constant temperature
equipment. Two additional module slots available as accessories can be fitted
to a LiBus module box, which is then connected as an external casing to the
LiBus interface on the constant temperature equipment.
This operating manual describes how to install and configure the RS
232/485 interface module (catalog no. LRZ 926).
The RS 232/485 interface is designed for activating constant temperature
equipment via the LAUDA command set. The interface functions provided
for this purpose are described in the chapters Write commands and Read
commands.
1.1 Intended use
The interface module can only be operated as intended and under the
conditions specified in this operating manual.
The interface module is an accessory that increases the connections options
of LAUDA constant temperature equipment. It may only be installed in con-
stant temperature equipment that supports the interface provided. Refer to
the chapter "Compatibility” in this operating manual for a list of compatible
product lines.
Operation of the interface module is also permitted in combination with the
LiBus module box (LAUDA catalog no. LCZ 9727). This operating manual
also contains a description of how to install and connect up the module box.
Operation after incomplete assembly
Operation on incompatible constant temperature equipment
Operation using cables or connections that are defective or do not
confirm to standards
Reasonably foreseeable improper use
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1.2 Compatibility
The interface module is available as an accessory for the following LAUDA
product lines:
Integral IN
PRO
Variocool
Variocool NRTL
No operation of interfaces of the same type
Only one RS 232/485 type interface can be used for each item
of constant temperature equipment. This applies irrespective of the
interface operating mode.
No operation of dierent interfaces
Combining the RS 232/485 interface with a Profibus, Profinet,
or CAN interface is not permitted. These interfaces cannot be
combined with one another.
1.3 Technical changes
All technical modifications are prohibited without the written consent of the
manufacturer. Damage resulting from a failure to observe this condition will
void all warranty claims.
However, LAUDA reserves the right to make general technical modifica-
tions.
1.4 Warranty conditions
LAUDA grants a standard warranty of one year.
1.5 Copyright
This operating manual was written in German, checked and approved. If
the content of other language editions deviates from the German edition,
the information in the German edition shall take precedence. If you notice
any discrepancies in the content, please contact LAUDA Service, see
ÄChapter 1.6 “Contact LAUDA” on page 7.
Company and product names mentioned in the operating manual are usually
registered trademarks of the respective companies and are therefore subject
to brand and patent protection. Some of the images used may also show
accessories that are not included in the delivery.
All rights reserved, including those relating to technical modifications and
translations. This operating manual or parts thereof may not be modified,
translated or used in any other capacity without the written consent of
LAUDA. Violation of this may obligate the violator to the payment of dam-
ages. Other claims reserved.
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1.6 Contact LAUDA
Contact the LAUDA Service department in the following cases:
Troubleshooting
Technical questions
Ordering accessories and spare parts
Please contact our sales department for questions relating to your specific
application.
Contact information
LAUDA Service
Phone: [phone]
Fax: [phone]
Email: [email protected]
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2 Safety
2.1 General safety information and warnings
Read this operating manual carefully before use.
Keep the operating manual in a place within easy reach of the interface
module.
This operating manual is part of the interface module. If the interface
module is passed on, the operating manual must be kept with it.
This operating manual is applicable in combination with the operating
manual of the constant temperature equipment in which the interface
module is installed.
Manuals for LAUDA products are available for download on the
LAUDA website: https://www.lauda.de
The warnings and safety instructions in this operating manual must be
observed without fail.
There are also certain requirements for personnel, see ÄChapter 2.3
“Personnel qualification” on page 9.
Warning signs Type of danger
Warning – danger zone.
Signal word Meaning
DANGER! This combination of symbol and
signal word indicates an imminently
dangerous situation that will result
in death or serious injury if it is not
avoided.
WARNING! This combination of symbol and
signal word indicates a potentially
dangerous situation that can result
in death or serious injury if it is not
avoided.
NOTICE! This combination of symbol and
signal word indicates a poten-
tially dangerous situation that can
result in material and environmental
damage if it is not avoided.
Structure of warnings
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2.2 Information about the interface module
Always disconnect the constant temperature equipment from the power
supply before installing the interface module or connecting interfaces.
Always take the recommended safety measures against electrostatic
discharge before handling interface modules.
Avoid touching the circuit board with metallic tools.
Do not start up the constant temperature equipment before installation
of the interface module is complete.
Store any unused interface modules in their packaging in accordance
with the specified ambient conditions.
Use only suitable cables of sucient length for cable connections.
Make sure that the protective screen on the cables and connec-
tors complies with EMC regulations. LAUDA recommends using pre-
assembled cables.
Always lay cables correctly so that they do not pose a tripping hazard.
Secure the laid cables and make sure that they cannot be damaged
during operation.
Check the condition of the cables and interfaces prior to each opera-
tion.
Immediately clean any soiled parts, in particular unused interfaces.
Make sure that the signals transmitted via the interface correspond to
the permitted operating parameters of the interface module.
2.3 Personnel qualification
Only specialized personnel are permitted to install interfaces modules. Spe-
cialized personnel are personnel whose education, knowledge, and experi-
ence qualify them to assess the function and risks associated with the device
and its use.
Specialized personnel
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3 Unpacking
DANGER!
Transport damage
Electric shock
Closely inspect the device for transport damage prior to
commissioning!
Never operate a device that has sustained transport
damage!
NOTICE!
Electrostatic discharge
Material damage
Always observe safety measures against electrostatic dis-
charge.
Please observe the following installation sequence:
1. Remove the interface module from its packaging.
2. If you want to store the interface module at the installation location,
use the outer packaging. This packaging is protected against static
charging.
3. After installing the equipment, dispose of the packaging materials in
line with environmental regulations, see Ä“Packaging” on page 39.
If you discover any damage on the interface module, contact
LAUDA Service immediately, see ÄChapter 1.6 “Contact
LAUDA” on page 7.
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4 Device description
4.1 Purpose
The RS 232/485 module is designed for installation in constant temperature
equipment that supports the serial interface. The RS 232/485 interface
allows the user to activate constant temperature equipment via the LAUDA
command set (for example, control station).
4.2 Structure
1 Cover with holes for fastening screws
2 D-Sub socket, 9-pin
The RS 232/485 module is equipped with a serial interface with 9-pin
D-Sub socket that incorporates a galvanically isolated optocoupler to ensure
electrical isolation and greater immunity to interference. The module is con-
nected to a PC or control station via a 1:1 contacted cable, see ÄChapter
6.1.1 “Contact assignment RS 232” on page 15.
Fig. 1: RS 232/485 module
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5 Before starting up
5.1 Installing the interface module
The interface module is connected to an internal LiBus ribbon cable and
inserted into a vacant module slot. The number and arrangement of the
module slots vary depending on the device. The module slots are protected
by a cover that is screwed onto the casing or attached to the slot opening.
WARNING!
Touching live parts
Electric shock
Disconnect the device from the power supply before
starting any installation work.
Always observe safety measures against electrostatic dis-
charge.
The module installation description essentially applies to all LAUDA
constant temperature equipment; the example diagrams here show
the installation of an analog module in constant temperature equip-
ment from the Variocool product line.
Please note that an interface module with a small cover can only
be installed in a low module slot. The fitted cover must cover the
opening on the module slot completely.
You will require two M3 x 10 screws and a suitable screwdriver to
secure the interface module.
Please observe the following installation sequence:
1. Turn o the constant temperature equipment and pull out the mains
plug.
2. If necessary, remove the screws from the cover on the relevant
module slot. If necessary, use a slotted screwdriver to prise o the
cover.
Fig. 2: Removing the cover (schematic dia-
gram)
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3. Remove the cover from the module slot.
The module slot is open. The LiBus ribbon cable is attached to the
inside of the cover and is easily accessible.
4. Disconnect the LiBus ribbon cable from the cover.
5. Connect the red plug on the LiBus ribbon cable to the red socket on
the circuit board of the interface module. Plug and socket are reverse
polarity protected: Make sure that the lug on the plug is aligned with
the recess in the socket.
The interface module is correctly connected to the constant tem-
perature equipment.
6. Slide the LiBus ribbon cable and the interface module into the module
slot.
7. Secure the cover to the casing using two M3 x 10 screws.
The new interface on the constant temperature equipment is
ready for operation.
Fig. 3: Detaching the LiBus ribbon cable
(schematic diagram)
Fig. 4: Connecting the interface module
(schematic diagram)
Fig. 5: Securing the cover (schematic dia-
gram)
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5.2 Using the module box
You can extend LAUDA constant temperature equipment by two additional
module slots using the LiBus module box. The module box is designed for
interface modules with a large cover and is connected to constant tem-
perature equipment via a vacant LiBus socket.
The socket on the constant temperature equipment bears the label LiBus.
Please observe the following installation sequence:
1. Switch o the constant temperature equipment.
2. Disconnect the cable on the module box from the constant tem-
perature equipment.
The module box is disconnected from the power supply.
3. Check which interfaces are already present on the constant tem-
perature equipment and module box.
Observe the information on interface module compatibility.
Only install an interface module with the same type of inter-
face if operation with several of these interfaces is permitted.
4. Install the required interface module in the module box. Please read
the information on installing the module box in the constant tem-
perature equipment, see chapter "Installing the interface module".
5. Position the module box close to the constant temperature equip-
ment.
6. Connect the cable on the module box to the LiBus socket on the
constant temperature equipment.
The interfaces on the module box are ready for operation.
Fig. 6: LiBus module box, catalog no.
LCZ 9727
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6 Commissioning
6.1 Contact assignment
If you have assembled the cables yourself, please note the following:
Statutory EMC requirements also apply to the cable connec-
tions. Use only shielded connection lines with shielded plugs/
sockets.
Reliably isolate all equipment connected to the extra-low
voltage inputs and outputs according to DIN EN 61140
to safeguard against dangerous contact voltages. For
example, use double or reinforced insulation according to
DIN EN 60730-1 or DIN 60950-1.
Note the contact assignment required in each case,
see ÄChapter 6.1.1 “Contact assignment RS 232”
on page 15and ÄChapter 6.1.2 “Contact assignment
RS 485” on page 17.
The RS 232/485 interface is designed as a 9-pin D-Sub socket. The con-
nector can be configured for a 9‑or 25‑pin connection to a PC or control
station according to the contact assignments listed below. The plugs must
always be secured with the integral screw connection.
Refer to ÄChapter 12 “Accessories” on page 40 for accessory information
on assembling connection cables.
6.1.1 Contact assignment RS 232
Systems connected to RS 232 connections use so-called "handshake sig-
nals" to transmit status information, which enable the receiving system to
stop transmitting data that it can no longer process. The handshake therefore
helps protect against data loss.
Status information can be transmitted in two dierent ways:
Software
handshake
- The status information is part of the actual data transfer. A
three-wire cable is adequate, while signaling is performed via
an additional coding.
Hardware
handshake
- Status information is transmitted at the same time as the
data. Status information is not included in the operating
data, but the signaling requires a 7-wire cable for additional
signal lines.
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A 1:1 contacted, 3-wire cable (not a null modem cable) is required for an
RS 232 connection with software handshake. The operating mode RS 232
without hardware handshake must be set on the PC. Contacts should not be
connected unless they are needed. The following contact assignment applies,
depending on the version of the D-Sub socket on the PC:
Table 1: D-Sub sockets for RS 232 with software handshake
Constant temperature
equipment
PC / control station
Signal Contact
(9‑pin)
Contact
(9‑pin)
Contact
(25‑pin)
Signal
TxD 2 2 3 RxD
RxD 3 3 2 TxD
GND 5 5 7 GND
A 1:1 contacted, 7-wire cable (not a null modem cable) is required for
an RS 232 connection with hardware handshake. Contacts should not be
connected unless they are needed. The following contact assignment applies,
depending on the version of the D-Sub socket on the PC:
Table 2: D-Sub sockets for RS 232 with hardware handshake
Constant temperature
equipment
PC / control station
Signal Contact
(9‑pin)
Contact
(9‑pin)
Contact
(25‑pin)
Signal
TxD 2 2 3 RxD
RxD 3 3 2 TxD
DSR 4 4 20 DTR
GND 5 5 7 GND
DTR 6 6 6 DSR
CTS 7 7 4 RTS
RTS 8 8 5 CTS
RS 232 with software handshake
Fig. 7: D-Sub socket contacts, 9 and
25‑pin
RS 232 with hardware handshake
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6.1.2 Contact assignment RS 485
An RS 485 connection cannot be implemented using a 3-wire cable; con-
tacts should not be connected unless they are needed. The following contact
assignment applies, depending on the version of the D-Sub socket on the
connected system:
Table 3: D-Sub socket, RS 485, 9-pin
Signal Contact
Data A (-) 1
GND (optional) 5
Data B (+) 6
A RS 485 bus always requires a bus termination in the form of a
termination network (see Figure) that guarantees a defined standby
state in the high-ohm phases of bus operation. This termination
network is usually integrated in the insertable PC card (RS 485).
6.2 Software update
Older software installed on constant temperature equipment may have to be
updated for the new interface to work.
1. Switch on the constant temperature equipment after installing the
new interface.
2. Check whether a software warning appears on the display.
Warning 510 - 532 SW update required or SW too old : Please
contact LAUDA Service, see ÄChapter 1.6 “Contact LAUDA”
on page 7.
No software warning: Operate the constant temperature equip-
ment as normal.
Fig. 8: RS 485 termination
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7 Operation
7.1 Menu structure
The menu only ever shows functions that are available for the
current constant temperature equipment.
The menu for configuring the interface is integrated in the main menu of the
relevant constant temperature equipment:
Menu Modules Serial interface
Fig. 9: RS 232/485 interface menu
7.2 Interface functions
Interface functions such as read and write commands make it possible to
read out the current operating parameters of constant temperature equip-
ment and predefine specific settings and process values.
The interface functions supported by this interface are presented briefly
below. They are sorted by topic according to the component aected and
assigned a unique ID. Depending on the technical configuration of your
constant temperature equipment, the number and scope of the interface
functions actually available may vary from the list shown here, see chapter
"Availability of the interface functions".
7.2.1 General Information
Communication takes place according to the master/slave principle. In order
to ensure that a request and response are uniquely assigned to one another,
commands can only be sent to the constant temperature equipment once a
response to the previous command has been received.
All available read and write commands as well as the meaning of any error
messages that may occur are presented below. Note the following informa-
tion relating to syntax and sequencing when using these commands:
All operating units except for the master
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Numerical values are provided in fixed point format; numbers with up to
4 places in front of the decimal point and up to 2 places after the decimal
point are permitted:
Table 4: Acceptable data formats
-XXXX.XX -XXXX.X -XXXX. -XXXX XXXX.XX XXXX.X XXXX. XXXX
-XXX.XX -XXX.X -XXX. -XXX XXX.XX XXX.X XXX. XXX
-XX.XX -XX.X -XX. -XX XX.XX XX.X XX. XX
-X.XX -X.X -X. -X X.XX X.X X. X
-.XX -.X .XX .X
Error messages are output with the syntax "ERR_X":
ERR = Identification as an error message
X = Error number (whole number without leading zero, maximum of
4 digits)
Space " " and underscore "_" can be used synonymously.
The interface operates with 1 stop bit, 8 data bits and no parity bits.
4 transmission speeds are available for selection: 2400, 4800, 9600 or
19200 baud. 9600 baud is the factory preset.
Commands from an external source must always end with CR, CRLF or
LFCR. The response from the constant temperature equipment always
ends with CRLF. Meaning of the abbreviations:
CR = Carriage Return, (Hex: 0D)
LF = Line Feed, (Hex: 0A)
In order to ensure that a request and response are uniquely assigned
to one another, commands can only be sent to the constant tem-
perature equipment once a response to the previous command has been
received.
Example with set point transfer of 30.5 °C to the constant temperature
equipment.
PC / control station Constant temperature equipment
"OUT_SP_00_30.5"CRLF è
ç"OK"CRLF
Example
The interface operates with 1 stop bit, 8 data bits and no parity bits.
4 transmission speeds are available for selection: 2400, 4800, 9600 or
19200 baud. 9600 baud is the factory preset.
RS 485 commands are always preceded by the device address; up
to 128 device addresses are available. Device addresses always contain
three digits and start with "A": "A000_..." – "A127_...".
Commands from an external source must always end with CR. The
response from the constant temperature equipment always ends with
CR.
RS 232 protocol
RS 485 protocol
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Example with set point transfer of 30.5 °C to the constant temperature
equipment. In this example, the address 15 is used.
PC / control station Constant temperature equipment
"A015_OUT_SP_00_30.5"CR è
ç"A015_OK"CR
Example
7.2.2 Operating rights
As soon as a write command is sent to the device via the interface, the
interface automatically obtains the operating rights.
If another control section already has exclusive operating rights,
writing is not possible and the interface responds with error message
38 .
If you subsequently want to operate the device from a dierent control
section, you must first explicitly obtain the relevant operating rights.
If you wish to take over operation and operate the device using its keyboard,
you must press the softkey with the lock symbol on the device display and
confirm your entry.
Example
If you wish to prevent any other control section from obtaining operating
rights, you have the option of using the command with the ID 34 – setting
the timeout value for communication – to secure exclusive operating rights
for the interface. The timeout setting must be greater than 0 seconds.
When the timeout is set to a value greater than 0 ÄChapter 7.2.3
“Communication monitoring” on page 20, communication monitoring is
activated.
If the status of exclusive operating rights changes again, the timeout value
for communication monitoring must be reset to 0. Monitoring is deactivated
as a result.
Subsequently, the operating rights are no longer exclusive and another con-
trol section can obtain the operating rights, if required.
See also the chapter "Operator and viewer" in the operating manual accom-
panying your constant temperature equipment.
7.2.3 Communication monitoring
The write command with the ID 34 allows you to set the timeout value for
communication monitoring. If the selected value is greater than 0 seconds,
communication monitoring is activated for the interface. The timeout value
can also be set from the device menu of the interface module.
If a command is not sent via the interface for the duration of the preset
timeout, the timeout has expired and a disconnection is detected.
Valid for Integral IN and Variocool NRTL
constant temperature equipment
Exclusive operating rights
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