Leuze electronic MA 21 Parts list manual

MA 21 connector unit
as Leuze multiNet plus slave and as protocol converter
TECHNICAL DESCRIPTION
GB 02–05/08 50061416

Nortécnica S. R. L.
Tel. Int. + 54 1147 57-3129
Fax Int. + 54 1147 57-1088
Tel. Int. + 43 732 76460
Fax Int. + 43 732 785036
Balluff-Leuze Pty. Ltd.
Tel. Int. + 61 3 9720 4100
Fax Int. + 61 3 9738 2677
Leuze electronic nv/sa
Tel. Int. + 32 2253 16-00
Fax Int. + 32 2253 15-36
ATICS
Tel. Int. + 359 2 847 6244
Fax Int. + 359 2 847 6244
Leuze electronic Ltda.
Tel. Int. + 55 11 5180-6130
Fax Int. + 55 11 5181-3597
Leuze electronic AG
Tel. Int. + 41 44 834 02-04
Fax Int. + 41 44 833 26-26
Imp. Tec. Vignola S.A.I.C.
Tel. Int. + 56 3235 11-11
Fax Int. + 56 3235 11-28
Leuze electronic Trading
(Shenzhen) Co. Ltd.
Tel. Int. + 86 755 862 64909
Fax Int. + 86 755 862 64901
Componentes Electronicas Ltda.
Tel. Int. + 57 4 3511049
Fax Int. + 57 4 3511019
Schmachtl CZ s.r.o.
Tel. Int. + 420 244 0015-00
Fax Int. + 420 244 9107-00
Desim Elektronik APS
Tel. Int. + 45 7022 00-66
Fax Int. + 45 7022 22-20
SKS-automaatio Oy
Tel. Int. + 358 20 764-61
Fax Int. + 358 20 764-6820
Leuze electronic sarl.
Tel. Int. + 33 160 0512-20
Fax Int. + 33 160 0503-65
Leuze Mayser electronic Ltd.
Tel. Int. + 44 14 8040 85-00
Fax Int. + 44 14 8040 38-08
UTECO A.B.E.E.
Tel. Int. + 30 211 1206 900
Fax Int. + 30 211 1206 999
Sensortech Company
Tel. Int. + 852 26510188
Fax Int. + 852 26510388
Leuze electronic OOO
Tel. Int. + 7 495 933 75 05
Fax Int. + 7 495 933 7505
Leuze electronic AB
Tel. + 46 8 7315190
Fax + 46 8 7315105
Ingermark (M) SDN.BHD
Tel. Int. + 60 360 3427-88
Fax Int. + 60 360 3421-88
Leuze Lumiflex México, S.A. de C.V.
Tel. Int. + 52 8183 7186-16
Fax Int. + 52 8183 7185-88
Leuze electronic BV
Tel. Int. + 31 418 65 35-44
Fax Int. + 31 418 65 38-08
LA2P, Lda.
Tel. Int. + 351 214 447070
Fax Int. + 351 214 447075
Balluff Sp. z o. o.
Tel. Int. + 48 71 338 49 29
Fax Int. + 48 71 338 49 30
O`BOYLE s.r.l
Tel. Int. + 40 2 56201346
Fax Int. + 40 2 56221036
Elteco A/S
Tel. Int. + 47 35 56 20-70
Fax Int. + 47 35 56 20-99
Great Cofue Technology Co., Ltd.
Tel. Int. + 886 2 29 83 80-77
Fax Int. + 886 2 29 85 33-73
Countapulse Controls (PTY.) Ltd.
04/2008
Tel. Int. + 27 116 1575-56
Fax Int. + 27 116 1575-13
Schmachtl SK s.r.o.
Tel. Int. + 421 2 58275600
Fax Int. + 421 2 58275601
Tipteh d.o.o.
Tel. Int. + 386 1200 51-50
Fax Int. + 386 1200 51-51
Industrial Electrical Co. Ltd.
Tel. Int. + 66 2 6426700
Fax Int. + 66 2 6424249
Balluff Sensör Ltd. Sti.
Tel. Int. + 90 212 3200411
Fax Int. + 90 212 3200416
Balluff Asia pte Ltd
Tel. Int. + 65 6252 43-84
Fax Int. + 65 6252 90-60
Leuze electronic, Inc.
Tel. Int. + 1 248 486-4466
Fax Int. + 1 248 486-6699
SV Altera OOO
Tel. Int. + 38 044 4961888
Fax Int. + 38 044 4961818
C. illies & Co., Ltd.
Tel. Int. + 81 3 3443 4143
Fax Int. + 81 3 3443 4118
Profa-Tech Ltd.
Tel. Int. + 254 20 828095/6
Fax Int. + 254 20 828129
Leuze electronic Co., Ltd.
Tel. Int. + 82 31 3828228
Fax Int. + 82 31 3828522
KazPromAutomatics Ltd.
Tel. Int. + 7 7212 50 11 50
Fax Int. + 7 7212 50 11 50
Leuze electronic S.A.
Tel. Int. + 34 93 4097900
Fax Int. + 34 93 4903515
Logoprom ODO
Tel. Int. + 375 017 235 2641
Fax Int. + 375 017 230 8614
Schmachtl GmbH
SABROW HI-TECH E. & A. LTD.
Tel. Int. + 234 80333 86366
Fax Int. + 234 80333 84463518
Tipteh d.o.o. Beograd
Tel. Int. + 381 11 3131 057
Fax Int. + 381 11 3018 326
Leuze electronic S.r.l.
Tel. Int. + 39 02 26 1106-43
Fax Int. + 39 02 26 1106-40
Kvalix Automatika Kft.
Tel. Int. + 36 272 2242
Fax Int. + 36 272 2244
P.T. Yabestindo Mitra Utama
Tel. Int. + 62 21 92861859
Fax Int. + 62 21 6451044
Galoz electronics Ltd.
Tel. Int. + 972 3 9023456
Fax Int. + 972 3 9021990
Global-Tech (India) Pvt. Ltd.
Tel. Int. + 91 20 24470085
Fax Int. + 91 20 24470086
Tavan Ressan Co. Ltd.
Tel. Int. + 98 21 2606766
Fax Int. + 98 21 2002883
Tipteh Zagreb d.o.o.
Tel. Int. + 385 1 381 6574
Fax Int. + 385 1 381 6577
Tipteh d.o.o. Skopje
Tel. Int. + 389 70 399 474
Fax Int. + 389 23 174 197
Leuze electronic GmbH + Co. KG
P.O. Box 1111, D- 73277 Owen /Teck
Tel. [phone],
Fax [phone]
• www.leuze.com
Sales Region East
Phone [phone]
Fax [phone]
Postal code areas
01000-19999
39000-39999
98000-99999
Sales Region North
Phone [phone]
Fax [phone]
Postal code areas
20000-38999
40000-65999
97000-97999
Sales Region South
Phone [phone]
Fax [phone]
Postal code areas
66000-96999
Sales and Service
Worldwide
AT (Austria)
AR (Argentina)
AU + NZ (Australia + New Zealand)
BE (Belgium)
BG (Republic of Bulgaria)
BR (Brasil)
CH (Switzerland)
CO (Colombia)
CZ (Czech Republic)
CL (Chile)
CN (People’s Republic of China)
DK (Denmark)
FI (Finland)
GB (United Kingdom)
GR (Greece)
HK (Hong Kong)
IT (Italy)
HU (Hungary)
ID (Indonesia)
IL (Israel)
IN (India)
IR (Iran)
FR (France)
RU (Russian Federation)
SE (Sweden)
MY (Malaysia)
MX (Mexico)
NL (Netherlands)
PT (Portugal)
PL (Poland)
RO (Romania)
NO (Norway)
TW (Taiwan)
ZA (South Africa)
SK (Slowakia)
SI (Slovenia)
TH (Thailand)
TR (Turkey)
SG + PH (Singapore +
Philippines)
US + CA (United States +
Canada)
UA (Ukraine)
JP (Japan)
KR (South Korea)
KZ (Republic of Kazakhstan)
ES (Spain)
BY (Republic of Belarus)
Germany
KE (Kenia)
NG (Nigeria)
RS (Republic of Serbia)
HR (Croatia)
MK (Macedonia)
© All rights reserved, especially the right of reproduction, distribution and translation. Copying or
reproductions in any form require the written consent of the manufacturer.
Product names are used without warranty of unrestricted applicability.
Changes reflecting technical improvements may be made.

Leuze electronic MA 21 1
Table of contents
1 General information ........................................................................................................... 3
1.1 Explanation of symbols ........................................................................................................ 3
1.2 Declaration of conformity ..................................................................................................... 3
1.3 Description of MA 21 functions ............................................................................................ 3
1.4 Definition of terms ................................................................................................................ 4
2 Safety notices..................................................................................................................... 5
2.1 General safety notices ......................................................................................................... 5
2.2 Safety standards .................................................................................................................. 5
2.3 Intended use ........................................................................................................................ 5
2.4 Working safely ..................................................................................................................... 6
3 Specifications of the MA 21 .............................................................................................. 7
3.1 General specifications of the MA 21 .................................................................................... 7
3.2 Dimensioned drawing ..........................................................................................................8
3.3 Functions of the MA 21 ........................................................................................................ 8
3.4 Addressing in the network.................................................................................................. 10
3.5 Operational controls of the MA 21 ..................................................................................... 11
3.6 Service mode ..................................................................................................................... 15
4 Mounting........................................................................................................................... 18
4.1 Mounting the MA 21...........................................................................................................18
4.2 Arrangement of devices ..................................................................................................... 19
5 Connection ....................................................................................................................... 20
5.1 Connecting the host interface ............................................................................................ 20
5.1.1 RS 232 interface (MA 21 110) ..................................................................................................... 21
5.1.2 TTY interface (MA 21 120) .......................................................................................................... 21
5.1.3 RS 422 interface (MA 21 130) ..................................................................................................... 23
5.2 Connecting the multiNet plus interface .............................................................................. 23
5.2.1 RS 485 interface (MA 21 100 and MA 21 100.2).........................................................................23
5.3 Connecting the voltage supply ........................................................................................... 25
5.4 Connecting an external device........................................................................................... 26
5.4.1 Connecting the RS 232 client interface ....................................................................................... 26
5.4.2 Connecting the voltage supply..................................................................................................... 26
6 Commissioning ................................................................................................................ 27
6.1 Configuring the interfaces with the BCL-Config software................................................... 27
6.1.1 Setting the host interface............................................................................................................. 27
6.1.2 Setting the client interface ........................................................................................................... 28
6.2 Operating the MA 21 as multiNet plus slave ...................................................................... 29
6.3 Managing parameter sets in the MA 21 ............................................................................. 29
6.4 Executing a RESET ........................................................................................................... 31
6.4.1 Software RESET ("warm start")................................................................................................... 31
6.4.2 Hardware RESET ("cold start").................................................................................................... 31

2 MA 21 Leuze electronic
Table of contents
7 Diagnostics and troubleshooting................................................................................... 33
8 Type overview and accessories ..................................................................................... 35
8.1 Type overview of the MA 21 .............................................................................................. 35
9 Maintenance ..................................................................................................................... 36
9.1 General maintenance information...................................................................................... 36
9.2 Repairs, servicing .............................................................................................................. 36
9.3 Disassembling, packing, disposing .................................................................................... 36
10 Appendix........................................................................................................................... 37
10.1 EU Declaration of Conformity ............................................................................................ 37
10.2 ASCII table......................................................................................................................... 38

General information
Leuze electronic MA 21 3
TNT 35/7-24V
1 General information
1.1 Explanation of symbols
The symbols used in this operating manual are explained below.
Attention!
This symbol precedes text messages which must strictly be observed. Failure to comply with
this information can result in injuries to personnel or damage to the equipment.
Notice!
This symbol indicates text passages containing important information.
1.2 Declaration of conformity
The MA 21 modular connector units have been designed and manufactured in accordance
with applicable European directives and standards.
Notice!
A copy of all declarations of conformity available for this product can be found in the appen-
dix of this handbook (see chapter 10.1 "EU Declaration of Conformity" on page 37).
The manufacturer of this product, Leuze electronic GmbH + Co. KG in D-73277 Owen/Teck,
uses a certified quality assurance system in accordance with ISO 9001.
1.3 Description of MA 21 functions
The MA 21 modular connector unit is used to connect Leuze identification systems (IDS)
featuring an RS 232 interface such as BCL 22, RFM 32, VR and hand-held scanners to
other interfaces such as RS 422, TTY or to the Leuze multiNet (depending on device type).
This is accomplished by transmitting the data from the IDS via an RS 232 (V.24) interface
to the MA 21 where a module converts it to the respective protocol. The data format of the
RS 232 interface corresponds to the standard Leuze data format.

General information
4 MA 21 Leuze electronic
1.4 Definition of terms
For better understanding of the explanations provided in this document, a definition of terms
follows below:
• Online command:
These commands refer to the respective connected ident device and may be different
depending on the device. These commands are not interpreted by the MA4xDP-k, but
are instead transmitted transparently (see description of ident device).
•IDS:
Ident systems, e.g. barcode readers, RFID readers, VisionReader…
•CR:
Cross reference
• Leuze multiNet plus:
Proprietary, fast, client network based on RS 485

Safety notices
Leuze electronic MA 21 5
TNT 35/7-24V
2 Safety notices
2.1 General safety notices
Documentation
All entries in this technical description must strictly be observed, in particular those in the
"Safety notices" section. Keep this technical description in a safe place. It should be acces-
sible at all times.
Safety regulations
Observe the locally applicable legal regulations and the rules of the employer's liability insur-
ance association.
Repair
Repairs must only be carried out by the manufacturer or an authorised representative.
2.2 Safety standards
The devices of the series MA 21 were developed, manufactured and tested in accordance
with the applicable safety standards. They correspond to the state of the art.
2.3 Intended use
Attention!
The protection of personnel and the device is guaranteed only if the device is operated in a
manner corresponding to its intended use.
Areas of application
The MA 21 connector unit is used to connect hand-held scanners or other devices featuring
an RS 232 interface to the Leuze multiNet plus network or to connect directly to a host
computer featuring an RS 232, RS 422, RS 485 or TTY interface.

Safety notices
6 MA 21 Leuze electronic
2.4 Working safely
Attention!
Access to or changes on the device, except where expressly described in this operating
manual, are not authorised.
Safety regulations
Observe the locally applicable legal regulations and the rules of the employer's liability insur-
ance association.
Qualified personnel
Mounting, commissioning and maintenance of the device may only be carried out by quali-
fied personnel.
Electrical work must be carried out by a certified electrician.

Specifications of the MA 21
Leuze electronic MA 21 7
TNT 35/7-24V
3 Specifications of the MA 21
3.1 General specifications of the MA 21
Electrical data
Interface type (selectable) RS 232, with electrical isolation (MA 21 110)
RS 422, with electrical isolation (MA 21 130)
RS 485, with electrical isolation (MA 21 100)
RS 485 multiNet, with system connection and
electrical isolation (MA 21 100.2)
TTY, with electrical isolation (MA 21 120)
Service interface RS 232 internal, with data format,
9600Bd, 8 data bits, no parity, 1 stop bit
9-pin Sub-D connector
Switching input (only MA 21 100.2) 12 … 36VDC
Operating voltage 18 … 36VDC
Power consumption max. 9VA with IDS
max. 4VA without IDS
Operating voltage of
external devices
5.2VDC ±5% (not for MA 21 100.2)
max. 0.8A
Indicators see "Indicator LEDs" on page 14
RDY LED - green Power
ERR LED - yellow Error message
ACT LED - red Transparent mode
DTR LED - green Data transmission
Mechanical data
Protection class IP 65
Weight 640 g
Dimensions (H x W x D) 130 x 90 x 93mm
Housing diecast aluminium
Environmental data
Operating temperature range 0°C … +50°C
Storage temperature range -20°C … +60°C
Air humidity max. 90% rel. humidity, non-condensing
Vibration tested acc. to IEC 68.2.6
Shock tested acc. to IEC 68.2.27
Electromagnetic compatibility tested acc. to IEC 801

Specifications of the MA 21
8 MA 21 Leuze electronic
3.2 Dimensioned drawing
Figure 3.1: Dimensioned drawing of the MA 21
3.3 Functions of the MA 21
General information
The MA 21 connector unit is used to connect hand-held scanners or other devices featuring
an RS 232 interface to the Leuze multiNet plus network or to connect directly to a host
computer featuring an RS232, RS422, RS485 or TTY interface.
The MA 21 is a variation of the MA 30. For this reason the MA 21 contains operational
controls and display elements that have no function.
These operational controls and display elements are labelled accordingly in the description
that follows.
A: LED indicators

Specifications of the MA 21
Leuze electronic MA 21 9
TNT 35/7-24V
Leuze multiNet plus
Figure 3.2: MA 21 as a slave in the Leuze multiNet plus
Slaves in the multi-Net
All Leuze barcode readers and decoders that are multiNet plus compatible, can be used as
slaves, e.g. the following devices
• BCL 21 with MA 2
• BCL 31 with MA 2L
• MA 21 100 with hand-held reader
• MA 21 100 with external device
• MA 21 100.2 with RFMx2
• MA 21 100.2 with VRxxxx
Two-wire RS 485
The Leuze multiNet plus is optimised for fast transmission of scanner data to a primary host
computer. Physically it consists of a two-wire RS 485 interface which is controlled by a soft-
ware protocol - the multiNet plus protocol. This makes wiring the network easy and inexpen-
sive since the network wiring is passed through from slave to slave.
For the multiNet shielded, twisted pair conductors should be used. This allows a total
network length of up to 1200m.
If you would like to operate the MA 21 directly on the host computer, it is also possible to use
the various interfaces (RS 232, RS 422, TTY or RS 485) as well as various protocols such
as 3964/RK512 (not MA 21 100.2).
Protocols
Moreover, various data and frame formats can be selected from the software setup (except
for the MA 21 100.2, see chapter 6.1 "Configuring the interfaces with the BCL-Config soft-
ware"). All standard protocols including 3964/RK512 are thus covered.
other
slaves
MA 21
slaves
MA 21
slaves
MA 30
multiNet plus
master

Specifications of the MA 21
10 MA 21 Leuze electronic
3.4 Addressing in the network
Addressing via ASCII address
Addressing the individual barcode readers or devices is necessary for the functioning of the
network so that the data read can be matched to a station. Leuze uses 2-byte ASCII
addressing in multiNet plus. This addressing is included in each data telegram. This address
must be selected at the stations via software or hardware (rotary switch).
The following rules apply:
No address may occur twice in the network. The numbering must be without gaps, i.e. all
addresses up to the last slave address (=last subscriber in the network) must be occupied.
Notice!
Be careful to select the network addresses correctly during commissioning.
The logical order of the assigned addresses does not have to correspond to the physical or-
der of the read stations in multiNet plus.
Figure 3.3: Assignment of the network addresses
Master (MA 30): Addr. 00
Slaves: Addr. 01 to Addr. 30 (sequentially numbered)
Slave 1
Last slave
Read station
Slave n
Slave 3
Slave 2
Slave 1
MA 30
Master
Address of the
read station
Addr. 30
Addr. n
Addr. 03
Addr. 02
Addr. 01
Addr. 00

Specifications of the MA 21
Leuze electronic MA 21 11
TNT 35/7-24V
3.5 Operational controls of the MA 21
The operational controls of the MA 21 are described in the following.
The figures show the MA 21 with opened housing cover.
Operational controls of the MA 21 100, MA 21 110, MA 21 120, MA 21 130
Figure 3.4: Front view: Operational controls of the MA 21 100, MA 21 110, MA 21 120,
MA 21 130
Particularities:
• no connection for switching input/switching output
• voltage supply of external device (hand-held scanner etc.):
• terminals 30 and 31: 5.2VDC ±5%, max. 0.8A
• terminals 15 and 16: 24VDC
5
Address setting
Interface mode:
off: Host
on: Service
No function
ParaDefault
off: customer PS
on: standard PS
Host interface assignment: see module
Host interface module
Transparent
mode
Service plug
Service
Reset Operation
Voltage supply of external device (hand-held scanner etc.)

Specifications of the MA 21
12 MA 21 Leuze electronic
Operational controls of the MA 21 100.2
Figure 3.5: Front view: Control elements of the MA 21100.2
Particularities:
• no separate voltage supply
• connection option for switching input/switching output
• for RS 232 devices with system connector (RFM 12, RFM 32, RFM 62, BCL 21,
VR-KB)
Address setting
RFMxx connection
Bus termination,
see table
Operating mode
see table
Service plug
Reset

Specifications of the MA 21
Leuze electronic MA 21 13
TNT 35/7-24V
Element Function
Host interface module Pluggable interface card for host communication, choice
of RS 232, RS 485, RS 422 and TTY
Setting the network address: Set the device address on the rotary encoder switch or on
the encoding jumper
Rotary switch
Position 0: If the MA 21 is to serve as protocol con-
verter from RS 232 to RS 485, RS 422
and TTY in stand-alone mode (not multi-
Net!)
Position 1 … F: multiNet slave address (MA 21 100 and
MA 21 100.2)
Jumper
Can be set from 1 to F (15 positions) for addressing in
multiNet plus
Position 0 … 15 (right): lower address range 0 … 15
Position 16 … 30 (left): upper address range 16 … 30
Ribbon cable connection to
the BCL xx Not used with the MA 21
RESET button Press >0.2s and<4s: warm start
Press 4s: cold start
DIP switch 1
transparent mode
Off: Online commands that are transmitted via the
host interface or multiNet, are interpreted and exe-
cuted by the MA 21.
On: Online commands that are transmitted via the
host interface or multiNet, are not interpreted and
go directly to the BCL/RF device.
DIP switch 2
ParaDefault
(MA 21 100.2 no function)
Off: With cold start, customer parameter set loaded
On: With cold start, standard parameter set loaded
DIP switch 3
interface mode
Off: Host-interface active/service interface ready to
listen
On: Service interface active/ host-interface deacti-
vated
DIP switch 4
source
"Off": Service interface connected to MA 21 (operation).
"On": Service interface connected to connected BCL/RF
device (configuration of the RS 232 device via
service).
Jumper service/operation Top: Service/listen (standard setting)
Service connector Sub-D 9-pin connector, RS 232 interface for service/setup
operation
Host interface
(not MA 21 100.2)
Terminals 1 … 6: Connection terminals for the host com-
puter, PIN assignments dependent on interface module

Specifications of the MA 21
14 MA 21 Leuze electronic
Indicator LEDs
Located at the rear are 6 LEDs that indicate the operating states of the MA 21:
Figure 3.6: Rear view: LEDs on the MA 21
Switch S4
bus termination RS 485
Position 1: Bus termination switched on
Position 2: Bus termination switched off, necessary for
the network
Client interface Terminals 26 … 28: Connection terminals for the external
RS 232 (not assigned with MA 21 100.2)
Voltage supply of external
device
not MA 21 100.2
Terminals 30 and 31: 5.2VDC ±5%, max. 0.8A
terminals 15 and 16: 24VDC
Operating voltage Terminals 17 … 21: Connection terminals for operating
voltage (18 … 36VDC) MA 21 and connected device.
Attention!
PE must be connected due to the interference-
suppression circuit!
LED State Meaning
RDY (green)
Operational readiness
(ready)
flashing
• Setup menu is active
• A reset or restart is being per-
formed
continuous light • Ready
ERR (yellow)
Error
flashing
• Special function is being per-
formed
• Setup menu is active
continuous light
• Hardware error or serious soft-
ware error
• Reset is being started
Element Function

Specifications of the MA 21
Leuze electronic MA 21 15
TNT 35/7-24V
3.6 Service mode
Service interface
The MA 21 offers the service interface for commissioning the connector unit. It can be
accessed once the MA 21 housing cover has been removed and features a 9-pin, Sub-D
connector (male).
Connection
You can use this to connect a PC or terminal to the MA 21 via the serial RS 232/V.24 inter-
face in order to configure the device. The connection is made using a crossed RS 232
connection cable that establishes the RxD, TxD and GND connections. A hardware hand-
shake via RTS, CTS is not supported at the service interface.
RS 232 connection cable
Figure 3.7: Connecting the service interface to a PC/terminal
ACT (red)
Indicates whether the
MA 21 is in transparent
mode
light off • Online commands are interpreted
and executed
continuous light • Online commands are not inter-
preted
DEC (green) Not featured on the MA 21
NET (green) Not featured on the MA 21
DTR (green)
Data transmission
Indicates data transmission to the
host interface of the MA 21
LED State Meaning
5 GND
3 TxD
2 RxD
GND 5
TxD 3
RxD 2
1
1
PC/terminal
COM interface
MA 21
Service interface

Specifications of the MA 21
16 MA 21 Leuze electronic
Service DIP switch
In order to activate the service mode DIP switch 3 must be set to the "ON" position. The
switch must always be in this position if commands are to be sent from a PC to the MA 21
via the service interface. If the switch is set to "OFF", you can passively listen the data.
Figure 3.8: Position of the DIP switch and the jumper in the service network
Notice!
To be able to configure the connected device (RS 232) directly via the service interface, DIP
switch 4 must also be set to "ON".
Attention!
Upon activation of the service mode the connection to the host computer is interrupted.
Data format of the service interface
If DIP switch 3 is set to "Service", the service interface always functions with the fixed data
format
• 9600 baud
• 8 data bits
• 1 stop bit
• no parity
• no handshake
ASCII address
Attention!
Please note that to communicate in the network, the Frame format/Address mode/ASCII
address option must always be activated and the correct address must be selected.
Data frame Structure
The data frame on the service interface is structured as follows:
Prefix 1 Addr. HI Addr. LO Data Terminator 1 Terminator 2
ASCII STX 0 1 CODE CR LF
HEX 02h 30h 31h 43h 4Fh 44h 45h 0Dh 0Ah
12
o
n
34
B
S
MA

Specifications of the MA 21
Leuze electronic MA 21 17
TNT 35/7-24V
Notice!
The "CODE" data content is only an example; normally the actual user data of the frame are
shown here. Addr. 01 corresponds to slave 1 in the network.
Exiting service mode
As soon as DIP switch 3 is switched back to "Host", the host interface is reactivated.
Data monitoring
When the service interface is in this position, it is possible to "listen" to the data via the
RS 232 as they are transferred from the MA 21 to the host computer (data monitoring).
To do this, you must set your PC / terminal to the host protocol as the host interface is only
passively decoupled with no change of protocol.
Notice!
The configuration programs required for configuring the MA 21 xxx via the service interface,
such as BCL-Config or RF-Config, can be downloaded from
www.leuze.de -> Download -> Identify for BCL, RFID, VR etc.
For further information on configuring see chapter 6.1 "Configuring the interfaces with the
BCL-Config software".

Mounting
18 MA 21 Leuze electronic
4 Mounting
Notice!
To mount the respective ident devices, please observe the notices in the corresponding op-
erating instructions.
4.1 Mounting the MA 21
There are different types of mounting arrangements for the MA 21.
• Using 4 threaded holes (M6) or
• using the provided M8 screws in the lateral fastening grooves in the mounting
plate.
Figure 4.1: Fastening options for the MA 21