Lumel SM5 User manual

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USER’S MANUAL
MODULE
WITH 8 LOGIC
INPUTS
SM5 TYPE

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CONTENTS
1. APPLICATION..................................................................................5
2. MODULE SET..................................................................................5
3. BASIC REQUIREMENTS AND OPERATIONAL SAFETY..............6
4. INSTALLATION................................................................................8
4.1. Module fixing ............................................................................8
4.2. Electrical connections...............................................................8
5. SERVICE........................................................................................11
5.1 Description of the MODBUS protocol implementation ........... 11
5.2 Description of the MODBUS protocol functions .....................12
5.3. Map of module registers.........................................................15
5.4. Set of module registers ..........................................................16
6. TECHNICAL DATA ........................................................................20
7. BEFORE A DAMAGE WILL BE DECLARED ...............................21
8. ORDERING CODES ......................................................................22
9. MAINTENANCE AND GUARANTEE ............................................23

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1. APPLICATION
The SM5 module has 8 logic inputs and RS-485 and RS-232 interfaces with
MODBUS RTU and ASCII transmission protocols.
It is destined to readout logic states of logic inputs and enables their access in
industrial systems. Ports in RS-485 and RS-232 are galvanically isolated from
input signals and the supply. The module programming is possible by means of the
RS-485 or the RS-232 port. Configurable baud rate: 2400, 4800, 9600, 19200,
34800, 57600, 115200 bit/s. The SM5 module set includes a connecting cable to
connect with the PC computer (RS-232).
2. MODULE SET
The set consists of:
- SM5 module ................................................................... 1 pc.
- user’s manual................................................................. 1 pc.
- guarantee card ............................................................... 1 pc.
- plug with BU1005 screw terminals ................................. 2 pcs
- plug with BU0204 screw terminals ................................. 2 pcs
- RS-232 socket hole plug ................................................ 1 pc
- RS-232 wire to connect with the computer (1.5 m.) ....... 1 pc
When unpacking the module, please check whether the type and version code
on the data plate correspond to the order.

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3. BASIC REQUIREMENTS, SAFETY INFORMATION
Symbols located in this service manual mean:
WARNING!
Warning of potential, hazardous situations. Especially important, one
must acquaint with this before connecting the module. The non-obser-
vance of notices marked by these symbols can occasion severe injuries
of the personnel and the damage of the module.
CAUTION!
Designates a general useful note. If you observe it, handling of the
module is made easier. One must take note of this, when the module
is working inconsistently to the expectations. Possible consequences
if disregarded !
In the security scope the module the requirements of the EEC. Low-Voltage Directive
(EN 61010 -1 issued by CENELEC).
Remarks concerning the operator safety:
1. General
The SM5 module is destined to be installed in measuring systems,
on a 35 mm mounting rail
Non-authorized removal of the required housing, inappropriate use, incorrect
installation or operation creates the risk of injury to personnel or damage to
equipment. For more detailed information please study the user’s manual.
All operations concerning transport, installation, and commissioning as well
as maintenance must be carried out by qualified, skilled personnel and
national regulations for the prevention of accidents must be observed.
According to this basic safety information, qualified, skilled personnel are
persons who are familiar with the installation, assembly, commissioning, and
operation of the product and who have qualifications necessary for their
occupation.
2. Transport, storage
Please observe the notes on transport, storage and appropriate handling.
Observe the climatic conditions given in technical data.
3. Installation
The module must be installed according to the regulation and instructions
given in this user’s manual.
Ensure proper handling and avoid mechanical stress.
Do not bend any components and do not change any insulation distances.

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Do not touch any electronic components and contacts.
Modules may contain electrostatically sensitive components, which can
easily be damaged by inappropriate handling.
Do not damage or destroy any electrical components since this might
endanger your health!
4. Electrical connection
Before switching the module on, one must check the correctness of
connection to the network.
In case of the protection terminal connection with a separate lead, one must
remember to connect it before the connection of the module to the mains.
When working on live modules, the applicable national regulations for the
prevention of accidents must be observed.
The electrical installation must be carried out according to the appropriate
regulations (cable cross-sections, fuses, PE connection). Additional
information can be obtained from the user’s manual.
The documentation contains information about installation in compliance with
EMC (shielding, grounding, filters and cables). These notes must be observed
for all CE-marked products.
The manufacturer of the measuring system or installed devices is responsible
for the compliance with the required limit values demanded by the EMC
legislation.
5. Operation
Measuring systems including SM5 modules must be equipped with protection
devices according to the corresponding standard and regulations for
prevention of accidents.
After the instrument has been disconnected from the supply voltage, live
components and power connections must not be touched immediately
because capacitors can be charged.
The housing must be closed during operation.
The RS-232 socket serves only to connect the device (Fig. 2) working with
the MODBUS protocol. When the module is not used, place the hole plug in
the RS-232 socket of the module.
6. Maintenance and servicing
Please observe the manufacturer’s documentation.
Read all product-specific safety and application notes in this user’s manual.
Before taking the module out, one must turn the supply off.
The removal of the module housing during the guarantee period may cause
its cancellation.

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Fig.1. Overall dimensions and way of the module fixing
4. INSTALLATION
4.1 Module fixing
The SM5 module is fixed on a 35 mm rail in accordance with EN 60715. The module
housing is made of a self-extinguishing plastic. Overall dimensions of the housing:
45 x 120 x 98 mm.
Overall dimensions and the fixing way are presented on the fig. 1.
4.2. Electrical connections
Following external wires can be connected to the module:
- up to 2.5 mm2cross-section (from supply and interface side),
- up to 1.5 mm2cross-section (from input signal side).
Caution:
One must pay special attention to the correct connection of external sig-
nals (see fig. 2)

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Fig 2. Electrical connections of SM5 logic input module
There are three diodes on the frontal plate:
green - signals switching the supply on
green (RxD) - signals data reception through the module
yellow (TxD) - signals data transmission through the module
Caution:
Regarding electromagnetic interference one must use shielded wires to
connect binary input signals and RS-485 interface signals. The shield must
be connected to the protective terminal in one point.

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The „+” signal (terminal 10) is the 5 V output with admissible overload 100 A. One
must connect binary signals to the mass and appropriate output terminal.
The way to connect interfaces are shown on g. 3 and 4. To obtain a correct trans-
mission through the RS-485 interface it is necessany to connect lines A and B lines
in parallel with their equivalents in other devices. The connection must be made
with a shielded wire. The shield must be connected to a shielded wire. The shield
must be connected to the protective terminal, in one point.
The GND line serves to equalize potentials of interface lines in the communicating
devices.
To obtain the communication with the computer of PC class throught the RS-485
port, it is essential to apply an RS-232/RS-485 converter (e.g. PD51 from Lumel
production) or an RS-485 interface card. Marking of transmission lines for the card
in the PC computer depends on the card producer.
To obtain the connection through the RS-232 port, the added wire in the module
set, is sufcent.
The module can be connected to a device of master type through one interface
port. In case of the simultaneous connection of both ports, the module will work
through the RS-232 interface
Fig. 3 Way of the RS-485 interface connection.