Leuze electronic MA 21 Technical Description

MA 21 connector unit
as Leuze multiNet plus slave and as protocol converter
GB 02–05/08 50061416
TECHNICAL DESCRIPTION
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Leuze electronic GmbH + Co. KG P.O. Box 1111, D- 73277 Owen / Teck Tel. +49(0) 70 21/ 573-0, Fax +49(0 )7021 / 573-199
• www.leuze.com
Sales Region East
Phone 035027/629-106 Fax 035027/629-107
Postal code areas 01000-19999 39000-39999 98000-99999
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Phone 07021/573-306 Fax 07021/9850950
Postal code areas 20000-38999 40000-65999 97000-97999
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Postal code areas 66000-96999
Sales and Service
Worldwide
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© 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.
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
Leuze electronic MA 21 1
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
2 MA 21 Leuze electronic

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 appen­dix of this handbook (see chapter 10.1 "EU Declaration of Conformity" on page 37).
General information
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.
Leuze electronic MA 21 3
TNT 35/7-24V
General information

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
4 MA 21 Leuze electronic

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 acces­sible at all times.
Safety regulations
Observe the locally applicable legal regulations and the rules of the employer's liability insur­ance 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

Safety notices
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.
Leuze electronic MA 21 5
TNT 35/7-24V
Safety notices

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 insur­ance association.
Qualified personnel
Mounting, commissioning and maintenance of the device may only be carried out by quali­fied personnel. Electrical work must be carried out by a certified electrician.
6 MA 21 Leuze electronic

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)
Service interface RS 232 internal, with data format,
Switching input (only MA 21 100.2) 12 … 36 V DC Operating voltage 18 … 36 V DC Power consumption max. 9 VA with IDS
Operating voltage of external devices
Indicators
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 93 mm 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
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)
9600 Bd, 8 data bits, no parity, 1 stop bit 9-pin Sub-D connector
max. 4 VA without IDS
5.2 V DC ± 5 % (not for MA 21 100.2) max. 0.8 A
see "Indicator LEDs" on page 14
Specifications of the MA 21
TNT 35/7-24V
Leuze electronic MA 21 7
Specifications of the MA 21
A: LED indicators

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.
8 MA 21 Leuze electronic
Specifications of the MA 21
other
slaves
MA 21 slaves
MA 21 slaves
MA 30
multiNet plus
master
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 soft­ware protocol - the multiNet plus protocol. This makes wiring the network easy and inexpen­sive 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 1200 m.
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).
TNT 35/7-24V
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 soft­ware"). All standard protocols including 3964/RK512 are thus covered.
Leuze electronic MA 21 9
Specifications of the MA 21
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

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:
Master (MA 30): Addr. 00
Slaves: Addr. 01 to Addr. 30 (sequentially numbered)
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 or­der of the read stations in multiNet plus.
Figure 3.3: Assignment of the network addresses
10 MA 21 Leuze electronic

3.5 Operational controls of the MA 21

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.)
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
Specifications of the MA 21
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: 5.2 V DC ± 5 %, max. 0.8 A
• terminals 15 and 16: 24 V DC
Leuze electronic MA 21 11
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Specifications of the MA 21
Address setting
RFMxx connection
Bus termination, see table
Operating mode
see table
Service plug
Reset
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)
12 MA 21 Leuze electronic
Specifications of the MA 21
Element Function
Host interface module
Setting the network address:
Rotary switch
Jumper
Ribbon cable connection to the BCL xx
RESET button
DIP switch 1 transparent mode
DIP switch 2 ParaDefault
(MA 21 100.2 no function)
DIP switch 3 interface mode
DIP switch 4 source
Jumper service/operation Top: Service/listen (standard setting)
Service connector
Host interface
(not MA 21 100.2)
Pluggable interface card for host communication, choice of RS 232, RS 485, RS 422 and TTY
Set the device address on the rotary encoder switch or on the encoding jumper
Positio n 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 multi­Net!)
Positio n 1 … F: multiNet slave address (MA 21 100 and
MA 21 100.2)
Can be set from 1 to F (15 positions) for addressing in multiNet plus Positio n 0 … 15 (right): lower address range 0 … 15 Positio n 16 … 30 (left): upper address range 16 … 30
Not used with the MA 21
Press >0.2s and<4s: warm start Press 4 s: cold start
Off: Online commands that are transmitted via the
host interface or multiNet, are interpreted and exe­cuted 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.
Off: With cold start, customer parameter set loaded On: With cold start, standard parameter set loaded
Off: Host-interface active/service interface ready to
listen
On: Service interface active/ host-interface deacti-
vated
"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).
Sub-D 9-pin connector, RS 232 interface for service/setup operation
Terminals 1 … 6: Connection terminals for the host com­puter, PIN assignments dependent on interface module
TNT 35/7-24V
Leuze electronic MA 21 13
Specifications of the MA 21
Element Function
Switch S4 bus termination RS 485
Client interface
Voltage supply of external device
not MA 21 100.2
Operating voltage
Indicator LEDs
Located at the rear are 6 LEDs that indicate the operating states of the MA 21:
Position 1: Bus termination switched on Position 2: Bus termination switched off, necessary for
the network
Terminals 26 … 28: Connection terminals for the external RS 232 (not assigned with MA 21 100.2)
Terminals 30 and 31: 5.2 V DC ± 5 %, max. 0.8 A terminals 15 and 16: 24 V DC
Terminals 17 … 21: Connection terminals for operating voltage (18 … 36 V DC) MA 21 and connected device.
Attention!
PE must be connected due to the interference­suppression circuit!
Figure 3.6: Rear view: LEDs on the MA 21
LED State Meaning
RDY (green)
Operational readiness (ready)
ERR (yellow) Error
14 MA 21 Leuze electronic
flashing
continuous light • Ready
flashing
continuous light
• Setup menu is active
• A reset or restart is being per­formed
• Special function is being per­formed
• Setup menu is active
• Hardware error or serious soft­ware error
• Reset is being started
Specifications of the MA 21
5 GND
3 TxD
2 RxD
GND 5
TxD 3
RxD 2
1
1
PC/terminal
COM interface
MA 21
Service interface
LED State Meaning
ACT (red)
Indicates whether the MA 21 is in transparent mode
DEC (green)
light off
continuous light
Not featured on the MA 21
• Online commands are interpreted and executed
• Online commands are not inter­preted
NET (green)
DTR (green)
Data transmission

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 inter­face 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 hand­shake via RTS, CTS is not supported at the service interface.
RS 232 connection cable
Not featured on the MA 21
Indicates data transmission to the host interface of the MA 21
TNT 35/7-24V
Leuze electronic MA 21 15
Figure 3.7: Connecting the service interface to a PC/terminal
Specifications of the MA 21
1
2
o n
3
4
BSMA
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
HEX
16 MA 21 Leuze electronic
STX 0 1 CODE CR LF
02h 30h 31h 43h 4Fh 44h 45h 0Dh 0Ah
Specifications of the MA 21
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".
Leuze electronic MA 21 17
TNT 35/7-24V
Mounting

4 Mounting

Notice!
To mount the respective ident devices, please observe the notices in the corresponding op­erating 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
18 MA 21 Leuze electronic

4.2 Arrangement of devices

Voltage supply
MA 31
Slave 1 BCL 31
Slave 2
RFM
Slave 3
BCL or
VR
RS 232 RS 422 RS 485 or TTY
Host
(PLC, process etc.)
-Backup
-Parameter
Network master
multiNet plus
MA 2
MA 21 100.2
Ideally, the MA 21 should be mounted so that it is easily accessible near the ident device in order to ensure good operability, e.g. for configuring the device connected.
Mounting
Figure 4.2: Example of arrangement of devices: Networking via multiNet plus
Leuze electronic MA 21 19
TNT 35/7-24V
Connection

5 Connection

5.1 Connecting the host interface

Connection terminals: 1-6
Pin assignments of interface modules
Attention!
The pin assignments of the connection terminals are dependent on the interface module connected. The respective terminal designations are printed on the modules or affixed to the cover of the MA 21.
The type designation of the MA 21 indicates which interface module is installed:
MA 21Interface types
Type designation/
Order code
MA 21 100 RS 485
MA 21 100.2
MA 21 110 RS 232 These versions use the MA 21 as
MA 21 120 TTY
MA 21 130 RS 422
Interface module of the
host interface
RS 485 multiNet plus with
system connectors
For multiNet see chapter 5.2
an interface and protocol con-
verter from RS 232 to the corre-
sponding host interface (cf.
following pages)
20 MA 21 Leuze electronic

5.1.1 RS 232 interface (MA 21 110)

Host
Shield
Host interface module
up to 10 m
123
4 5 6
TTY
T
X+ 1
T
X- 2 RX+ 3 RX- 4
- 5 GND
6
pas.TXakt.
pas .RXak t.
+20
mA Rx+ R
x
-
G
ND
+20
mA Tx
+
Tx
-
G
N D
Host Shield
Host interface module
up to 1000 m
Ground (shield)
Jumper position active
The MA 21 110 functions as a protocol converter with two electrically isolated RS 232 inter­faces (1 host, 1 client).
RS 232
RXD TXD C
S
T
T
S
R
GND
Figure 5.1: Connection of the MA 21110 to an RS 232 host computer
Notice!
The wiring for RTS and CTS must only be connected if RTS/CTS hardware handshake is used.
123
4 5 6
RS23
RXD T
XD
CTS
TS
R
- GND
Connection
2
1
2
3 4 5 6

5.1.2 TTY interface (MA 21 120)

The MA 21 120 functions as an interface converter from RS 232 (client) to TTY (host).
TTY active
a) MA 21 active/host passive:
Figure 5.2: Active connection of the MA 21120 to a TTY host computer
Leuze electronic MA 21 21
TNT 35/7-24V
Connection
123
4 5 6
TTY
TX
+
1
TX
-
2
RX
+
3
RX
-
4
-
5
G
ND
6
pas .TXakt.
pas.RXakt.
+20
mA Rx+
Rx-
G
ND
+20
mA Tx
+
Tx
-
G
N D
Host Shield
Host interface module
up to 1000 m
Jumper
Jumper
Jumper position passive
Ground (shield)
TTY passive
b) MA 21 passive/host active:
Figure 5.3: Passive connection of the MA 21120 to a TTY host computer
Hints for connecting the TTY interface:
• The active subscriber is the one which supplies the current (20 mA).
• Switching between active/passive on the host interface card is carried out using two
• The jumpers for active/passive switching must always be changed in pairs (upper and
jumper pairs, independent for transmit (Tx) and for receive (Rx).
lower jumpers in the same position). Thus the current source and GND are switched internally at the MA 21 host interface module.
• Mixed operation is possible (transmit active/receive passive or vice versa).
• When switching between active and passive operation or vice versa, the pin order of the connection cable is changed (pin assignment).
22 MA 21 Leuze electronic

5.1.3 RS 422 interface (MA 21 130)

Host Shield
Host interface module
up to 1200 m
R
S
485
485A 1 485A
2
485B
3
485B
4
GND
5
G
ND 6
123456
485
A
485B
G
ND
485A
485
B
GND
Host Shield
Host interface module
up to 1200 m
With the MA 21 130 the client interface (RS 232) is converted to a 422 (host) interface. A protocol conversion is also possible.
RS 422
Connection
Rx
+ Rx­Tx
+
Tx
-
G
ND
Figure 5.4: Connection of the MA 21130 to an RS 422 host computer

5.2 Connecting the multiNet plus interface

Connection terminals: 1-6 RS 485

5.2.1 RS 485 interface (MA 21 100 and MA 21 100.2)

RS 485
123
4 5 6
RS422
TX+ TX­RX+ 3 RX-
- GND
1 2
4 5
6
TNT 35/7-24V
Figure 5.5: Connection of the MA 21100 to an RS 485 host computer
Leuze electronic MA 21 23
Connection
Master MA 30/31
multiNet plus in­terface
MA 2 MA 21MA 10
BCL 40
or
BCL 80
BCL 21
or
BCL 31
BCL 40 or BCL 80
Terminal resist­ance 220
Ω
BCL 90
MA 90
HS
or
RS 232
device
Connection with MA 30 only
multiNet plus interface
The multiNet plus interface establishes the connection between the subscriber. Note that the RS 485 interface module must be plugged in. The two-wire RS 485 with galvanic decoupling is passed through from slave to slave.
Recommended network cable: twisted pair
multiNet plus wiring
GND
GND
GND
RS 485
485 B
485 B
485 B
485 A
485 A
485 A
GND 485 B 485 A
cross section: min. 0.2 mm
shielded
copper resistance <100 Ω/km e.g. LiYCY 2 x 0.2 mm
GND 485 B 485 A
GND
GND
485 B
485 B
485 A
485 A
RS 485
2
2
GND 485 B 485 A
GND
GND
485 B
485 B
485 A
485 A
RS 485 RS 485
GND
GND
485 B
485 B
485 A
485 A
Figure 5.6: multiNet plus wiring
24 MA 21 Leuze electronic
Hints for connecting the multiNet plus interface:
• The RS 485 A, 485 B and GND lines are passed through in the network; for the MA 30, MA 21, MA 10 and MA 90 the corresponding terminals are doubly provided for this purpose.
• Connect the shielding to the slaves with GND.
• The maximum wire length in the network is 1200 m.
• The (physically) last slave in the network should be fitted with a 220 sistor between 485 A and 485 B. This prevents reflections and improves resistance to interference.
• 485 A and 485 B wires must in no case be exchanged within the network. The multiNet will otherwise not function.

5.3 Connecting the voltage supply

Connection terminals: 17-21 (for all MA 21)
Voltage supply
Connection terminals for the voltage supply of MA 21
Input voltage: 18 … 36 V DC
Power consumption: 4 VA max., MA 21 without BCL
Connection
Ω
terminating re-
Terminal 17, 18: V_IN (pos. operating voltage)
Terminal 19, 20: GND_IN (Reference potential, Ground)
Terminal 21: PE (protective conductor; earth)
Notice!
The terminals for V_IN and GND_IN are doubly supplied for ease of wiring. Thus the supply voltage can be passed through from one read station to the next.
Leuze electronic MA 21 25
TNT 35/7-24V
Connection

5.4 Connecting an external device

5.4.1 Connecting the RS 232 client interface

Connection terminals: 26-28 (not for MA 21 100.2)
RS 232
Connection terminals for the RS 232 interface of an external device such as a hand-held scanner
Terminal 26: RXD
Terminal 27: TXD
Terminal 28: GND

5.4.2 Connecting the voltage supply

Connection terminals: 15, 16, 30, 31 (not for MA 21 100.2)
Voltage supply
Various voltages are available: 5.2 V and 24 V fixed.
Terminals 15: 24 V
Terminals 16: GND
Terminals 30: 5.2 V ± 5 %
Terminals 31: GND
The 24 V client voltage supply is potential-free relative to the MA 21 voltage supply as well as the client interface.
26 MA 21 Leuze electronic
Commissioning

6 Commissioning

Setting parameters
To activate network operation with the MA 21, it may be necessary to set several parame­ters. For best results use the BCL-Config or IRF-Config software for PCs, programs devel­oped expressly for this purpose. With the aid of these programs, you can use a fixed data format via the service interface of the MA 21 to configure the host and client interface.
You can download the config. tool from www.leuze.de -> Download -> Identify for BCL, RFID, VR etc.

6.1 Configuring the interfaces with the BCL-Config software

6.1.1 Setting the host interface

Host interface
Prior to the initial commissioning of the host interface it must be set to the parameters of the host computer/PLC.
Figure 6.1: Standard setting for the Host Interface menu
Notice!
The host interface is the host connection, depending on the interface module used (connec­tion terminals 1 to 6).
Leuze electronic MA 21 27
TNT 35/7-24V
Commissioning
Select the desired baud rate, the stop bits, the data bits and the parity here. You can also set various handshake modes and protocols.
The RK512/3964 protocol can also be selected here. The individual parameters for this protocol can be found in the tree structure configuration under:
Communication -> customer interface -> 3964 / RK 512 protocol
Attention!
If the MA 21 is operated in a network ("Leuze multiNet"), no changes may be made here. The MA 21 automatically sets itself to the multiNet protocol!

6.1.2 Setting the client interface

Client interface
Prior to the initial commissioning of the client interface, this must be set to the parameters of the external RS232 device.
Figure 6.2: Standard settings of the Client Interface menu
Notice!
The client interface is the connection to the external RS 232 device (connection terminals 26 to 28). A hardware handshake via RTS / CTS is not supported at the client interface.
28 MA 21 Leuze electronic

6.2 Operating the MA 21 as multiNet plus slave

Initialising the network
• Set the appropriate slave address on the address selection switch (see also chapter 3.1).
• The last slave address must be set on the address switch on the MA 30.
• Set the "operation" operating mode on the slaves.
• Switch on the voltage supply.
Acknowledgements on the terminal window: Meaning:
i> 00 M M = master
i> 01 s s = slave
i> 02 s
i>
i>
i>
i> nn s n = last slave address (max 30)
If, following the initialisation phase (approx. 30 s), not all slaves are yet operational or a time­out (Addr.+T) has been output, please refer to chapter "Troubleshooting".
The connected slaves can now be contacted and configured from the master as if they were individual devices.
Commissioning
The only difference is:
Contacting a slave
Within the network each data telegram must contain an ASCII address that specifies for which slave the data are intended (cf. chapter 3.4) Service mode: structure of the data frame.

6.3 Managing parameter sets in the MA 21

Parameter sets
The MA 21 is capable of managing three types of parameter sets A "parameter set" refers to a memory area in the EEPROM that contains all settings (param­eters) of a read station such as code type, number of digits, output formatting etc. in numer­ical form. The BCL-Config configuration software facilitates menu-driven parameter setting. For the software handling of the parameter sets, these are sequentially numbered from "0" to "2".
1. Current parameter set ("0"): parameter set that can be changed via an online or offline setup and that contains the current settings of the MA 21.
Leuze electronic MA 21 29
TNT 35/7-24V
Commissioning
Cold start "factory parameter set" PC20
Factory
parameter
2
"Configure"
online/offline setup
PC01
PC10 or cold start "customer-spec. parameter set“
Compu-
ter
or
PLC
Customer
parameter
1
Current
parameter
0
Hand-held scanner
Scale
Printer
RFM
RS 232
2. Customer-specific parameter set ("1"): parameter set stored in the MA 21 that can be created as a copy of a valid, current parameter set for the purpose of storing customer-specific settings. As a result, the customer-specific data are retained following a hardware reset.
3. Factory parameter set ("2"): Leuze standard parameter set that cannot be changed. The settings correspond to the state upon delivery. By means of a hardware RESET (see chapter 6.4.2), it is possible to restore the fac­tory settings of the MA 21.
Figure 6.3: Managing parameter sets in the MA 21
The parameter sets are not erased by switching off the operating voltage. The current parameter set is used on start-up. If this is invalid, the customer-specific parameter set is loaded.
30 MA 21 Leuze electronic
"parameter copy" command
With the online command "Parameter Copy", abbreviated "PC", you can copy a given parameter set as a backup, so to speak, into the customer-specific parameter set and use a hardware RESET to return the read station to this state at any time (cf. chapter 6.4.2).
Commands for handling the parameter sets via software:
PC01: copies the current parameter set to the customer-specific parameter set
PC10:
PC20:
copies the customer-specific parameter set to the current parameter set (corre­sponds to hardware RESET with customer-specific parameters)
copies the standard parameter set to the current parameter set (corresponds to hardware RESET with factory parameters)

6.4 Executing a RESET

6.4.1 Software RESET ("warm start")

Software RESET
In the event that the MA 21 no longer responds in spite of having applied the operating voltage, and the RDY LED no longer illuminates, you should first perform a software RESET. To do this, press the RESET button on the MA 21 for more than 0.2 and less than 4.0 s.
The operating software will be restarted and the devices with the current parameters will be reinitialised. Following initialisation, the MA 21 responds with "S" and the RDY LED should illuminate.
If the MA 21 does not respond even after carrying out a warm start, there may be an error in the setup settings, i.e. in the "current parameter set" of the MA 21. A hardware RESET (see chapter 6.4.2) returns the parameter set of the MA 21 to a defined state so that the devices are operable again.
Commissioning

6.4.2 Hardware RESET ("cold start")

Hardware RESET
By means of a cold start, you can either reset the MA 21 to factory settings (factory param­eter set) or to your customer-specific parameter set. Which parameter set is loaded depends on the position of DIP switch 2. Initiate a cold start by pressing the RESET button for more than 4 s.
Attention!
A cold start replaces the current parameter set either with your customer-specific parameter set or the Leuze factory parameter set, i.e. any settings made there are lost. Therefore per­form a hardware RESET only if the software cannot be started or if you intentionally want to reset the MA 21.
Leuze electronic MA 21 31
TNT 35/7-24V
Commissioning
1
2
o n
3
4
BMA
+
RESET
press > 4 s
1
2
o n
3
4
BMA
+
RESET
press > 4 s
Customer-specific parameter set:
Factory parameter set:
Figure 6.4: Loadable parameter sets during cold start
32 MA 21 Leuze electronic

7 Diagnostics and troubleshooting

If problems occur during commissioning of the MA 21, you can refer to the following table. Typical errors and their possible causes are described here as well as tips for their elimina­tion.
No. Error description Possible error causes Measures
Error when switching on
Diagnostics and troubleshooting
1 No LED illuminates
RDY LED flashes for longer
2
than 30 s after start-up
With network operation, net-
3
work master (Addr. "00") does not respond to the host
Master responds with "00S", the
4
connected slaves do not respond
Master responds with "00S", all connected slaves respond with
5
time-out (e.g. "01T, 02T, 03T etc.)
• Incorrect polarity or improper connection of operating volt­age
• "Power-ON" function test could not be carried out suc­cessfully
No communication between host and master:
• Incorrect interface type plugged in
• Interface incorrectly con­nected
• Incompatible data format between host and MA 21
• DIP switch 3 set to "Service"
• Last slave address on the master MA 21 not set
• DIP switch 4 set to "BCL"
• Interruption or polarity reversal of the multiNet plus interface (RS 485)
• The slaves have not recog­nised the "multiNet" protocol type and are using a different data format
Check connection, correct if
necessary
Check the network wiring;
switch the operating voltage off and back on again
Replace interface module
Correct according to the con-
nection diagram
Check the data format and
change in the master setup
Set DIP switch 3 to "Host"
Use the rotary switch or mas-
ter setup to set the last slave address
Set DIP switch 4 to "MA 21"
Test and correct the connec-
tion; wires A and B must not be interchanged
Test and correct settings for
the host protocol of the slaves at the service interface
data format: multiNet mode baud rate: 57600 protocol: multiNet plus
slave
TNT 35/7-24V
other errors on start-up
Master and slaves respond with
6
"Addr.+S", but MA 21 with time­out (e.g. 03T)
• MA 21 is not connected cor­rectly or is using an incorrect data format
• MA 21 is set to "Service"
Test the connection of the
MA 21, check host protocol (see above)
Switch MA 21 to "Operation"
Leuze electronic MA 21 33
Diagnostics and troubleshooting
No. Error description Possible error causes Measures
Errors during operation
DTR LED flashes but no data
7
arrive at the host computer
RDY and ERR LEDs flash syn-
8
chronously
9 RDY LED does not illuminate
• Incorrect protocol set at the host interface of the MA 21
• DIP switch 3 set to "Service"
• The MA 21 is in setup mode; no reading tasks can be per­formed while in this mode
• Operating software of the MA 21 does not function properly
Set the protocol on the
MA 21 to the values of the host computer
Set DIP switch 3 to "Host"
End setup and save if neces-
sary; the MA 21 returns to operating mode
Perform a software RESET
Notice!
Please use page 34 and page 33 as a master copy should servicing be required. Mark the items in the "Measures" column which you have already examined, fill out the fol­lowing address field and fax both pages together with your service contract to the fax number listed below.
Customer data (please complete) Leuze service fax number:
Device type:
Company:
Contact person/ Department:
Phone (direct):
Fax:
Street / No:
ZIP code/City:
Country:
+49 7021 573-199
34 MA 21 Leuze electronic

8 Type overview and accessories

8.1 Type overview of the MA 21

Part N o. Type designation Remark
500 30481 MA 21 100 Protocol/interface converter - from RS 232 to RS 485/RS 485 multiNet
500 03125 MA 21 100.2
500 30482 MA 21 110
500 30483 MA 21 120 Protocol/interface converter - from RS 232 to TTY 500 30484 MA 21 130 Protocol/interface converter - from RS 232 to RS 422
Protocol/interface converter - from RS 232 to RS 485 multiNet with system connection
Protocol/interface converter - from RS 232 to RS 232, electrically isolated
Type overview and accessories
Leuze electronic MA 21 35
TNT 35/7-24V
Maintenance

9 Maintenance

9.1 General maintenance information

The MA 21 does not require any maintenance by the operator.

9.2 Repairs, servicing

Repairs to the device must only be carried out by the manufacturer.
Contact your Leuze distributor or service organisation should repairs be required.
ª
The addresses can be found on the inside of the cover and on the back.
Notice!
When sending devices to Leuze electronic for repair, please provide an accurate description of the error.

9.3 Disassembling, packing, disposing

Repacking
For later reuse, the device is to be packed so that it is protected.
Notice!
Electrical scrap is a hazardous waste! Observe the locally applicable regulations regarding disposal of the product.
36 MA 21 Leuze electronic

10 Appendix

10.1 EU Declaration of Conformity

Appendix
Leuze electronic MA 21 37
TNT 35/7-24V
Appendix

10.2 ASCII table

HEX DEC CTRL ABB DESIGNATION MEANING
00 0 ^@ NUL NULL Null
01 1 ^A SOH START OF HEADING Start of heading
02 2 ^B STX START OF TEXT First character of text
03 3 ^C ETX END OF TEXT Last character of text
04 4 ^D EOT END OF TRANSMISSION End of transmission
05 5 ^E ENQ ENQUIRY Request to transmit data
06 6 ^F ACK ACKNOWLEDGE Positive response
07 7 ^G BEL BELL Bell symbol
08 8 ^H BS BACKSPACE Backspace
09 9 ^I HT HORIZONTAL TABULATOR Horizontal tabulator
0A 10 ^J LF LINE FEED Line feed
0B 11 ^K VT VERTICAL TABULATOR Vertical tabulator
0C 12 ^L FF FORM FEED Form feed
0D 13 ^M CR CARRIAGE RETURN Carriage return
0E 14 ^N SO SHIFT OUT Shift out
0F 15 ^O SI SHIFT IN Shift in
10 16 ^P DLE DATA LINK ESCAPE Data link escape
11 17 ^Q DC1 DEVICE CONTROL 1 (X-ON) Device control 1
12 18 ^R DC2 DEVICE CONTROL 2 (TAPE) Device control 2
13 19 ^S DC3 DEVICE CONTROL 3 (X-OFF) Device control 3
14 20 ^T DC4 DEVICE CONTROL 4 Device control 4
15 21 ^U NAK
16 22 ^V SYN SYNCHRONOUS IDLE Synchronization
17 23 ^W ETB
18 24 ^X CAN CANCEL Cancel
19 25 ^Y EM END OF MEDIUM End of medium
1A 26 ^Z SUB SUBSTITUTE Substitution
1B 27 ^[ ESC ESCAPE Escape
1C 28 ^\ FS FILE SEPARATOR File separator
1D 29 ^] GS GROUP SEPARATOR Group separator
1E 30 ^^ RS RECORD SEPARATOR Record separator
NEGATIVE (/Tape) ACKNOWL-
EDGE
END OF TRANSMISSION
BLOCK
Negative acknowledge
End of data transmission block
38 MA 21 Leuze electronic
Appendix
HEX DEC CTRL ABB DESIGNATION MEANING
1F 31 ^_ US UNIT SEPARATOR Unit separator
20 32 SP SPACE Space
21 33 ! EXCLAMATION POINT Exclamation point
22 34 " QUOTATION MARK Quotation mark
23 35 # NUMBER SIGN Number sign
24 36 $ DOLLAR SIGN Dollar sign
25 37 % PERCENT SIGN Percent sign
26 38 & AMPERSAND Ampersand
27 39 ' APOSTROPHE Apostrophe
28 40 ( OPENING PARENTHESIS Opening parenthesis
29 41 ) CLOSING PARENTHESIS Closing parenthesis
2A 42 * ASTERISK Asterisk
2B 43 + PLUS Plus
2C 44 , COMMA Comma
2D 45 - HYPHEN (MINUS) Hyphen (minus)
2E 46 . PERIOD (DECIMAL) Period (decimal)
2F 47 / SLANT Slant
30 48 0
31 49 1
32 50 2
33 51 3
34 52 4
35 53 5
36 54 6
37 55 7
38 56 8
39 57 9
3A 58 : COLON Colon
3B 59 ; SEMI-COLON Semi-colon
3C 60 < LESS THAN Less than
3D 61 = EQUALS Equals
3E 62 > GREATER THAN Greater than
3F 63 ? QUESTION MARK Question mark
40 64 @ COMMERCIAL AT Commercial AT
41 65 A
TNT 35/7-24V
Leuze electronic MA 21 39
Appendix
HEX DEC CTRL ABB DESIGNATION MEANING
42 66 B
43 67 C
44 68 D
45 69 E
46 70 F
47 71 G
48 72 H
49 73 I
4A 74 J
4B 75 K
4C 76 L
4D 77 M
4E 78 N
4F 79 O
50 80 P
51 81 Q
52 82 R
53 83 S
54 84 T
55 85 U
56 86 V
57 87 W
58 88 X
59 89 Y
5A 90 Z
5B 91 [ OPENING BRACKET Opening bracket
5C 92 \ REVERSE SLANT Reverse slant
5D 93 ] CLOSING BRACKET Closing bracket
5E 94 ^ CIRCUMFLEX Circumflex
5F 95 _ UNDERSCORE Underscore
60 96 GRAVE ACCENT Grave accent
61 97 a
62 98 b
63 99 c
64 100 d
40 MA 21 Leuze electronic
HEX DEC CTRL ABB DESIGNATION MEANING
65 101 e
66 102 f
67 103 g
68 104 h
69 105 i
6A 106 j
6B 107 k
6C 108 l
6D 109 m
6E 110 n
6F 111 o
70 112 p
71 113 q
72 114 r
73 115 s
74 116 t
75 117 u
76 118 v
77 119 w
78 120 x
79 121 y
7A 122 z
7B 123 { OPENING BRACE Opening brace
7C 124 | VERTICAL LINE Vertical line
7D 125 } CLOSING BRACE Closing brace
7E 126 ~ TILDE Tilde
7F 127 DEL DELETE (RUBOUT) Delete
Appendix
TNT 35/7-24V
Leuze electronic MA 21 41
Index
A
Areas of application . . . . . . . . . . . . . . . . . .5
Arrangement of devices . . . . . . . . . . . . . .19
B
BCL . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
D
Declaration of conformity . . . . . . . . . . . 3, 37
Definition of terms . . . . . . . . . . . . . . . . . . .4
Description of functions . . . . . . . . . . . . . . . .3
Diagnosis . . . . . . . . . . . . . . . . . . . . . . . .33
Disassembling . . . . . . . . . . . . . . . . . . . . .36
Disposing . . . . . . . . . . . . . . . . . . . . . . . .36
E
EU Declaration of Conformity . . . . . . . . . . .37
External device . . . . . . . . . . . . . . . . . . . . .3
F
Fastening
Fastening grooves
Threaded holes . . . . . . . . . . . . . . . . . .18
. . . . . . . . . . . . . . . .18
I
IDS (ident system) . . . . . . . . . . . . . . . . . . .4
Intended use . . . . . . . . . . . . . . . . . . . . . . .5
R
Repair . . . . . . . . . . . . . . . . . . . . . . . . 5, 36
RFM / RFI . . . . . . . . . . . . . . . . . . . . . . . . 3
S
Safety notices . . . . . . . . . . . . . . . . . . . . . 5
Service fax . . . . . . . . . . . . . . . . . . . . . . . 34
Service order . . . . . . . . . . . . . . . . . . . . . 34
Servicing . . . . . . . . . . . . . . . . . . . . . . . . 36
Specifications
Electrical data
Environmental data . . . . . . . . . . . . . . . 7
Indicators . . . . . . . . . . . . . . . . . . . . . . 7
Mechanical data . . . . . . . . . . . . . . . . . . 7
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . 3
. . . . . . . . . . . . . . . . . . . 7
T
Troubleshooting . . . . . . . . . . . . . . . . . . . 33
Type overview . . . . . . . . . . . . . . . . . . . . 35
M
Maintenance . . . . . . . . . . . . . . . . . . . . . .36
Mounting . . . . . . . . . . . . . . . . . . . . . . . . .18
Mounting the MA 21 . . . . . . . . . . . . . . . . .18
P
Packing . . . . . . . . . . . . . . . . . . . . . . . . . .36
Q
Quality assurance . . . . . . . . . . . . . . . . . . . .3
42 MA 21 Leuze electronic
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