WAGO 750-643 User manual

Fieldbus Independent
I/O Modules
MP-Bus Master Module
750-643
Manual
Version 1.3.0

ii • General
WAGO-I/O-SYSTEM 750
I/O Modules
Copyright 2012 by WAGO Kontakttechnik GmbH & Co. KG
All rights reserved.
WAGO Kontakttechnik GmbH & Co. KG
Hansastraße 27
D-32423 Minden
Phone: [phone] – 0
Fax: [phone] – 1 69
E-Mail: [email protected]
Web: http://www.wago.com
Technical Support
Phone: [phone] – 5 55
Fax: [phone] – 85 55
E-Mail: [email protected]
Every conceivable measure has been taken to ensure the correctness and com-
pleteness of this documentation. However, as errors can never be fully ex-
cluded, we would appreciate any information or ideas at any time.
E-Mail: [email protected]
We wish to point out that the software and hardware terms as well as the
trademarks of companies used and/or mentioned in the present manual are
generally trademark or patent protected.

Content •iii
WAGO-I/O-SYSTEM 750
I/O Modules
Content
1Important Notes ..........................................................................................3
1.1 Legal Bases............................................................................................... 3
1.1.1 Copyright ............................................................................................. 3
1.1.2 Personnel Qualifications...................................................................... 3
1.1.3 Use of the 750 Series in Compliance with Underlying Provisions ..... 3
1.1.4 Technical Condition of Specified Devices .......................................... 3
1.2 Standards and Guidelines for Operating the 750 Series........................... 3
1.3 Symbols .................................................................................................... 3
1.4 Safety Information.................................................................................... 3
1.5 Font Conventions ..................................................................................... 3
1.6 Number Notation...................................................................................... 3
1.7 Scope ........................................................................................................ 3
2I/O Modules.................................................................................................3
2.1 Special Modules ....................................................................................... 3
2.1.1 750-643 [MP-Bus Master Module] ................................................... 10
2.1.1.1 View.............................................................................................. 10
2.1.1.2 Description.................................................................................... 10
2.1.1.3 Indicating devices ......................................................................... 12
2.1.1.4 Schematic circuit diagram............................................................. 12
2.1.1.5 Technical data ............................................................................... 13
2.1.1.6 Functional description................................................................... 14
2.1.1.7 Process data................................................................................... 15
2.1.1.8 Data transfer.................................................................................. 17
2.1.1.8.1 Message codes for the extended control byte .......................... 18
2.1.1.8.2 Message codes for the extended status byte............................. 19
2.1.1.8.3 Use of the module 750-643 with programmable fieldbus
controllers................................................................................. 20
2.1.1.8.3.1 Compatibility....................................................................... 21
2.1.1.8.3.2 Overview of function blocks ...............................................21
2.1.1.8.4 Function macros ....................................................................... 22
2.1.1.8.4.1 Function macro output process data.................................... 22
2.1.1.8.4.2 Function macro input process data...................................... 23
2.1.1.9 Network structure.......................................................................... 24
2.1.1.9.1 Bus cable ..................................................................................24
2.1.1.9.2 Cable lengths ............................................................................ 24
2.1.1.9.3 Bus circuit ................................................................................ 26
2.1.1.9.4 Topology .................................................................................. 27
2.1.1.9.5 External MP-Bus Master (hand held) ...................................... 27

4 •Important Notes
Legal Bases
WAGO-I/O-SYSTEM 750
I/O Modules
1 Important Notes
This section includes an overall summary of the most important safety
requirements and notes that are mentioned in each individual section. To
protect your health and prevent damage to devices as well, it is imperative to
read and carefully follow the safety guidelines.
1.1 Legal Bases
1.1.1 Copyright
This Manual, including all figures and illustrations, is copyright-protected.
Any further use of this Manual by third parties that violate pertinent copyright
provisions is prohibited. Reproduction, translation, electronic and
phototechnical filing/archiving (e.g., photocopying) as well as any
amendments require the written consent of WAGO Kontakttechnik GmbH &
Co. KG, Minden, Germany. Non-observance will involve the right to assert
damage claims.
WAGO Kontakttechnik GmbH & Co. KG reserves the right to provide for any
alterations or modifications that serve to increase the efficiency of technical
progress. WAGO Kontakttechnik GmbH & Co. KG owns all rights arising
from the granting of patents or from the legal protection of utility patents.
Third-party products are always mentioned without any reference to patent
rights. Thus, the existence of such rights cannot be excluded.
1.1.2 Personnel Qualifications
The use of the product described in this Manual requires special personnel
qualifications, as shown in the following table:
Activity Electrical specialist Instructed
personnel*)
Specialists**) having
qualifications in PLC
programming
Assembly X X
Commissioning X X
Programming X
Maintenance X X
Troubleshooting X
Disassembly X X
*) Instructed persons have been trained by qualified personnel or electrical specialists.
**) A specialist is a person, who – thanks to technical training – has the qualification, know-
ledge and expertise to meet the required specifications of this work and to identify any po-
tential hazardous situation in the above listed fields of activity.

Important Notes •5
Legal Bases
WAGO-I/O-SYSTEM 750
I/O Modules
All responsible persons have to familiarize themselves with the underlying
legal standards to be applied. WAGO Kontakttechnik GmbH & Co. KG does
not assume any liability whatsoever resulting from improper handling and
damage incurred to both WAGO´s own and third-party products by
disregarding detailed information in this Manual.
1.1.3 Use of the 750 Series in Compliance with Underlying
Provisions
Couplers, controllers and I/O modules found in the modular WAGO-I/O-
SYSTEM 750 receive digital and analog signals from sensors and transmit
them to the actuators or higher-level control systems. Using programmable
controllers, the signals can also be (pre-)processed.
The components have been developed for use in an environment that meets
the IP20 protection class criteria. Protection against finger injury and solid
impurities up to 12.5 mm diameter is assured; protection against water damage
is not ensured. Unless otherwise specified, operation of the components in wet
and dusty environments is prohibited.
1.1.4 Technical Condition of Specified Devices
The components to be supplied Ex Works, are equipped with hardware and
software configurations, which meet the individual application requirements.
Changes in hardware, software and firmware are permitted exclusively within
the framework of the various alternatives that are documented in the specific
manuals. WAGO Kontakttechnik GmbH & Co. KG will be exempted from
any liability in case of changes in hardware or software as well as to non-
compliant usage of components.
Please send your request for modified and new hardware or software
configurations directly to WAGO Kontakttechnik GmbH & Co. KG.

6 •Important Notes
Standards and Guidelines for Operating the 750 Series
WAGO-I/O-SYSTEM 750
I/O Modules
1.2 Standards and Guidelines for Operating the 750 Series
Please adhere to the standards and guidelines required for the use of your
system:
The data and power lines shall be connected and installed in compliance
with the standards required to avoid failures on your system and to
substantially minimize any imminently hazardous situations resulting in
personal injury.
For assembly, start-up, maintenance and troubleshooting, adhere to the
specific accident prevention provisions which apply to your system (e.g.
BGV A 3, "Electrical Installations and Equipment").
Emergency stop functions and equipment shall not be made ineffective.
See relevant standards (e.g. DIN EN 418).
The equipment of your system shall be conform to EMC guidelines so that
any electromagnetic interferences will be eliminated.
Operating 750 Series components in home applications without further
measures is permitted only if they meet the emission limits (emissions of
interference) in compliance with EN 61000-6-3. You will find the detailed
information in section "WAGO-I/O-SYSTEM 750" "System
Description" "Technical Data".
Please observe the safety precautions against electrostatic discharge in
accordance with DIN EN 61340-5-1/-3. When handling the modules,
please ensure that environmental factors (persons, working place and
packaging) are well grounded.
The valid standards and guidelines applicable for the installation of switch
cabinets shall be adhered to.

Important Notes •7
Symbols
WAGO-I/O-SYSTEM 750
I/O Modules
1.3 Symbols
Danger
Always observe this information to protect persons from injury.
Warning
Always observe this information to prevent damage to the device.
Attention
Marginal conditions that must always be observed to ensure smooth and
efficient operation.
ESD (Electrostatic Discharge)
Warning of damage to the components through electrostatic discharge.
Observe the precautionary measure for handling components at risk of
electrostatic discharge.
Note
Make important notes that are to be complied with so that a trouble-free and
efficient device operation can be guaranteed.
Additional Information
References to additional literature, manuals, data sheets and internet pages.

8 •Important Notes
Safety Information
WAGO-I/O-SYSTEM 750
I/O Modules
1.4 Safety Information
When connecting the device to your installation and during operation, the
following safety notes must be observed:
Danger
The WAGO-I/O-SYSTEM 750 and its components are an open system. It
must only be assembled in housings, cabinets or in electrical operation rooms.
Access is only permitted via a key or tool to authorized qualified personnel.
Danger
All power sources to the device must always be switched off before carrying
out any installation, repair or maintenance work.
Warning
Replace defective or damaged device/module (e.g. in the event of deformed
contacts), as the functionality of field bus station in question can no longer be
ensured on a long-term basis.
Warning
The components are not resistant against materials having seeping and
insulating properties. Belonging to this group of materials is: e.g. aerosols,
silicones, triglycerides (found in some hand creams). If it cannot be ruled out
that these materials appear in the component environment, then the
components must be installed in an enclosure that is resistant against the
above mentioned materials. Clean tools and materials are generally required
to operate the device/module.
Warning
Soiled contacts must be cleaned using oil-free compressed air or with ethyl
alcohol and leather cloths.
Warning
Do not use contact sprays, which could possibly impair the functioning of the
contact area.
Warning
Avoid reverse polarity of data and power lines, as this may damage the
devices.
ESD (Electrostatic Discharge)
The devices are equipped with electronic components that may be destroyed
by electrostatic discharge when touched.

Important Notes •9
Font Conventions
WAGO-I/O-SYSTEM 750
I/O Modules
Warning
For components with ETHERNET/RJ-45 connectors:
Only for use in LAN, not for connection to telecommunication circuits.
1.5 Font Conventions
italic Names of paths and data files are marked in italic-type.
e.g.: C:\Programs\WAGO-IO-CHECK
italic Menu items are marked in italic-type, bold letters.
e.g.: Save
\ A backslash between two names characterizes the selection of a
menu point from a menu.
e.g.: File \ New
END Pushbuttons are marked as bold with small capitals
e.g.: ENTER
< > Keys are marked bold within angle brackets
e.g.: <F5>
Courier The print font for program codes is Courier.
e.g.: END_VAR
1.6 Number Notation
Number code Example Note
Decimal 100 Normal notation
Hexadecimal 0x64 C notation
Binary '100'
'0110.0100'
In quotation marks,
nibble separated with dots (.)
1.7 Scope
This manual describes the Special Module 750-643 MP-Bus Master Module
of the modular WAGO-I/O-SYSTEM 750.
Handling, assembly and start-up are described in the manual of the Fieldbus
Coupler. Therefore this documentation is valid only in the connection with the
appropriate manual.

10 •750-643 [MP-Bus Master Module]
View
WAGO-I/O-SYSTEM 750
I/O Modules
2 I/O Modules
2.1 Special Modules
2.1.1 750-643 [MP-Bus Master Module]
MP-Bus master module
Attention
The MP-Bus-Master Module is only for the use with the programmable
fieldbus controllers 750-8xx (except of the MODBUS programmable
fieldbus controllers 750-812/-814/-815/-816). So not use it with the fieldbus
couplers 750-3xx!
2.1.1.1 View
Bus Bus
24V 24V
MM
En En
13 14
C
D
B
A
750-643
TxD RxD
Enable
Handheld
Enable
Handheld
MP-Bus MP-Bus
Enable
Handheld
active
24 V MP-Bus-
Supply Voltage
active
Data contacts
DC 24 V
(MP-Bus
supply)
DC 24 V
(MP-Bus
supply)
0V
(MP-Bus
supply)
0V
(MP-Bus
supply)
Power jumper contacts
Fig. 2.1.1-1: View g064300e
2.1.1.2 Description
The MP-Bus master module 750-643 is used for the digital control of
actuators for dampers and control valves, as well as VAV volume flow
controllers and FLS window ventilation systems via the MP-Bus.
The MP-Bus (Multi Point Bus from the Swiss company Belimo) is a master-
slave bus, which is mainly used for ventilation systems in the heating and
ventilation area.
The I/O module 750-643 module acts as a MP-Bus Master that is integrated
into a fieldbus communications controller for local control. The fieldbus
network controller communicates from a network, such as Ethernet or
LonWords to bridge data to the MP-Bus Master module.

750-643 [MP-Bus Master Module] •11
Description
WAGO-I/O-SYSTEM 750
I/O Modules
The module has two connectors for connecting the MP-Bus and can manage a
total of up to 8 slaves (drives). One sensor can be connected to each slave. The
sensor type (active or passive, e.g. for temperature, humidity or ON/OFF
switches) is dependent on the type of drive.
The sensor value is detected by the drive and passed to the MP-Bus via an
A/D converter. The sensor value is scaled and evaluated in the programmable
fieldbus controller or in a higher-level control system.
The MP-Bus can be supplied directly via the 24 V and 0 V connectors. These
potentials are supplied via the power contacts of a power supply module.
A Belimo parameterizing unit (manual controller or Belimo PC tool) can be
connected to the module, especially for setting the parameters of Belimo
drives. The I/O module has two "Enable Handheld" connectors for this
purpose. If the external parameterizing unit (or the 24 V supply voltage) is
connected to one of these connectors, the module switches off the MP-Bus
supply.
Four green LEDs signal that the module is ready for use, the module bus
communication is free from faults, and the handheld unit is enabled, as well as
transmit, receive and the presence of an external voltage.
The arrangement of the individual output modules can be chosen at will when
engineering the fieldbus node. It is not necessary to use a block-by-block
arrangement.
The output module gets its 24 V supply for the field level from an up-stream
bus module or from a supply module. When the output modules are clipped
into place, the supply potential is automatically fed through to further bus
modules via the internal power contacts.
Note
The I/O module has no power contacts for accepting and relaying the PE
connection. If a PE connection is required by the subsequent I/O modules, a
potential supply module must be used.
Warning
The maximum current that is allowed to flow via the power contacts is 10 A.
When configuring the system, it must be ensured that this total current is not
exceeded. If this should be the case, then an additional supply module must
be used.
The module 750-643 can be used with all WAGO-I/O-SYSTEM 750
controllers, except of the MODBUS programmable controllers
750-812/-814/-815/-816.

12 •750-643 [MP-Bus Master Module]
Indicating devices
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.1.3 Indicating devices
LED Designation State Function
off Enable Handheld not active
A
Enable
Handheld
active green Enable Handheld active
off Transmission signal TxD not present
B TxD
green Transmission signal TxD present
off 24 V MP-Bus supply not present
C
24 V
MP-Bus
supply green 24 V MP-Bus supply present
off Receive signal RxD not present
13 14
C
D
B
A
D
C
B
A
Fig. 2.1.1-2:
Indicating devices
g063802x
D RxD
green Receive signal RxD present
2.1.1.4 Schematic circuit diagram
750-643
1
2
3
4
5
6
7
8
RxD
TxD
OUT
IN
RxD
TxD
Enable Handheld
MP-Bus
+24 V
0V
Enable
Handheld
MP-Bus
+24 V
0V
Enable
Handheld
Logic
Voltage
Supply
MP-Bus
MP-Bus
Voltage
Supply
Fig. 2.1.1-3: Schematic circuit diagram g064301e

750-643 [MP-Bus Master Module] •13
Technical data
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.1.5 Technical data
Module-specific data
MP-Bus specification Belimo PP/MP Specifications V1.21
(valid from 1.10.2002)
Maximum number of slaves 8
Supply voltage (MP-Bus) DC 24 V via power contacts
Current consumption (MP-Bus) 25 mA without motor current (for MP-Bus)
When the motors are supplied from the MP-Bus
module, the current values for all motors must be added
to this.
Transmission rate 1200 bit/s
Programming via WAGO-I/O-PRO
Diagnostic information Error bits in status byte
Error behavior Automatic restart on return of power
Supply voltage (internal) via system voltage DC/DC
Current consumption (internal) 15 mA
Potential isolation 500 V System/MP-Bus
Data width internal 1 byte C/S, 7 bytes data
Dimensions W x H*)x D
*)from top edge of mounting rail
12 mm x 64 mm x 100 mm
Weight 55 g
Norms and Directives (cf. Chapter 2.2 in manual for controller)
EMC CE Immunity according to EN 61000-6-2 (02), (EN 50082-2)
EMC CE Emissions according to EN 61000-6-3 (04), (EN 50081-1)
EMC marine applications
immunity to interference
according to Germanischer Lloyd (01) *)
EMC marine applications
emission of interference
according to Germanischer Lloyd (01) *)
Approvals (cf. Chapter 2.2 in manual for controller)
CULUS (UL508)
Conformity Marking
Accessories
Mini-WSB fast marking system

14 •750-643 [MP-Bus Master Module]
Functional description
WAGO-I/O-SYSTEM 750
I/O Modules
More Information
Detailed references to the approvals are listed in the document "Overview
Approvals WAGO-I/O-SYSTEM 750", which you can find on the CD ROM
ELECTRONICC Tools and Docs (Item-No.: 0888-0412)
or in the internet under: http://www.wago.com Documentation 
WAGO-I/O-SYSTEM 750 System Description
2.1.1.6 Functional description
The MP-Bus master module is controlled by means of function modules in the
higher-level control application. The MP-Bus master module passes MP-Bus
commands and messages between the MP-Bus actuator and the function
module unchanged (tunneled through). In addition, macros for an expanded
command set are provided in the module. Commissioning is also carried out
exclusively via the associated function modules.
There are different ways of accessing and evaluating the process data
depending on whether the module is used in a fieldbus node with a
programmable fieldbus controller.
When a programmable fieldbus controller is used, several IEC 61131-3
function blocks are required for the MP-Bus master functions. The task of the
function blocks is to make access to the management and monitoring of MP-
Bus devices quick and convenient for the user. All function blocks are
available in the form of a function library.
The header bytes, the start byte and command byte, and the parameter content
to be transmitted must be made available to the module. The generation and
monitoring of the checksums is handled by the module. The module is
therefore independent of application-specific MP-Bus commands and does not
need to be modified on the software side when a new MP-Bus device with
new commands appears on the market.
Viewed from the module bus, the module can be looked upon as a pure slave,
exactly like an MP-Bus device. A response is initiated for every request to the
module received via the module bus. Whether this takes place immediately
after receipt or with a time delay depends on the transmitted request. The
exact requirement or task for the module is represented by the message code
(MSG_CODE).

750-643 [MP-Bus Master Module] •15
Process data
WAGO-I/O-SYSTEM 750
I/O Modules
Differentiation is made between two types of MP-Bus communication. One
type of communication is used purely for sending broadcast messages, and the
other type controls and monitors the communication using a request-response
process. As the command that has been sent is not contained in the response to
a telegram from an MP-Bus device, the module makes two different request-
response processes available. In the advanced process (MSG_CODE
K2F_COM_T2), the MP-Bus command sent is returned by the module in the
module bus response. This makes it easier for the function block to monitor
and assign the response.
2.1.1.7 Process data
The bus module 750-643 makes an 8-byte process image available to the
fieldbus controller via 1 logical channel. The data to be sent and received are
stored in 6 output bytes (D0 ...D5) and 6 input bytes (D0 ...D5). Two control
bytes (C0, C1) and two status bytes (S0, S1) are used to control the data flow.
The bytes C1 and S1 are transferred as data bytes but are used as extended
status and control bytes.
Input data Output data
S0 Status byte C0 Control byte
S1 Extended status byte C1 Extended control byte
D0 Data byte 0 D0 Data byte 0
D1 Data byte 1 D1 Data byte 1
D2 Data byte 2 D2 Data byte 2
D3 Data byte 3 D3 Data byte 3
D4 Data byte 4 D4 Data byte 4
D5 Data byte 5 D5 Data byte 5
Status byte (S0)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
REG GEN
ERR
0 DPID XMAST
ER
X24V TXD RXD
RXD A receive action has been executed within the last 30 seconds.
TXD A transmit action has been executed within the last 30 seconds.
X24V 0 = External supply voltage detected / 1 = Supply missing.
XMASTER External MP-Bus master detected.
DPID Partial packet ID, 0 = first partial packet, 1 = second partial packet.
GENERR General module error (e.g. flash checksum error).
REG 0 = Process data exchange / 1 = Register communication.
0 not used

16 •750-643 [MP-Bus Master Module]
Process data
WAGO-I/O-SYSTEM 750
I/O Modules
Extended status byte (S1)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
MC3 MC2 MC1 MC0 ERR FMA DR DA
DA Data Acknowledge (toggle mode). Confirmation that the new output data have been accepted.
DR Data Request (toggle mode). New input data are ready for acceptance.
FMA Function macro active.
ERR The returned message code has an error. In this case, the data D0-D9 are structured differently
depending on the error.
MC0, MC1,
MC2, MC3
Message code (MSG_CODE).
Control byte (C0)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
REG 0 0 DPID 0 0 0 0
DPID Partial packet ID, 0 = first partial packet, 1 = second partial packet.
REG 0 = Process data exchange / 1 = Register communication.
0 Reserved
Extended control byte (C1)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
MC3 MC2 MC1 MC0 0 0 DA DR
DR Data Request (toggle mode). New output data are ready for acceptance.
DA Data Acknowledge (toggle mode). Confirmation that the new input data have been accepted.
MC0, MC1,
MC2, MC3
Message code (MSG_CODE).
0 Reserved
The data from the individual sensors are not mapped in the process image of
the connected controller, but are packed in the MP-Bus telegrams and
tunneled through to a function module in the application. This function
module decodes the telegrams so that the analogue or digital sensor data can
be subsequently evaluated and processed at application level.
The IEC application can be implemented in the connected programmable
fieldbus controller (PFC) of the fieldbus node with the WAGO-I/O-PRO or
WAGO-CAA programming tool.

750-643 [MP-Bus Master Module] •17
Data transfer
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.1.8 Data transfer
The serial MP-Bus module allows devices with MP-Bus and PP-interfaces to
be connected. The MP-Bus telegrams are transmitted to the MP-Bus
completely transparently. Other application-specific information can also be
transmitted.
The byte length of pure MP/PP telegrams varies between min. 4 bytes and
max. 10 bytes. The typical length is 7 bytes. The module bus communication
of all WAGO-I/O-SYSTEM 750 fieldbus controllers provides a maximum of
8 bytes, including control and status bytes, in each module bus telegram. MP-
Bus messages must therefore be split. They are divided between two
consecutive module bus telegrams. This applies both for the direction from the
fieldbus controller to the MP-Bus module and vice versa. The splitting process
is controlled by Bit 4 of the control or status bytes (DPID). The first partial
data packet is transferred when DPID = 0 and the second partial data packet
when DPID = 1.
The message code is identical for both partial data packets. This also applies
to the error bit ERR in the status byte for the direction to the fieldbus
controller.
In order to safeguard the sequence of data packets, a transaction number
(TNO) is assigned for each set of associated partial data packets. This
transaction number occupies the last byte of a module bus telegram and must
be incremented for each subsequent pair of partial data packets. The range of
values for the transaction numbers is thus 1 to 255 (255 is followed by 1
again). The transaction numbers are independent of the direction of
communication between fieldbus controller and MP-Bus master module.
When the MP-Bus module has received the data from the module bus for a
complete MP-Bus telegram, then this is signaled on the MP-Bus.
Error-free and erroneous MP-Bus communications are reported to the fieldbus
controller in different module bus telegrams. The messages are distinguished
by a Message ID, the message code (MSG_CODE). The message code is part
of the first data byte after the control or status byte. In all, there are 16
message codes available for both directions, ranging in value from 0 to 15.
Furthermore, four extended control bits or status bits are defined in the first
data byte along with the message code.
The remaining extended control and status bits are used for controlling or
confirming active module bus telegrams.

18 •750-643 [MP-Bus Master Module]
Data transfer
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.1.8.1 Message codes for the extended control byte
MSG_CODE DPID DATA Description
Null message
0 D0-4 not used
0 D5 TNO
1 D0-4 not used
F2K_NULL 0
1 D5 TNO
MP-Bus driver request for initialization
0 D0-4 not used
0 D5 TNO
1 D0-4 not used
F2K_INIT 1
1 D5 TNO
Module test (transparent communication). Number of data from
D1 are transmitted and received again, and reported back via
K2F_TEST.
0 D0 Number of data to be sent max. 9 (0D1-5 and 1D0-3)
0 D1-4 Transmission data (any byte stream)
0 D5 TNO
1 D0-3 Transmission data (any byte stream)
1 D4 not used
F2K_TEST 2
1 D5 TNO
Transmission request. MP-Bus communication for broadcast
telegrams.
The module returns the message code K2F_COM_T0 as a reply.
0 D0-4 MP-Bus telegram according to specification without length and
cross parity.
0 D5 TNO
1 D0-4 MP-Bus telegram according to specification without length and
cross parity.
F2K_COM_T0 3
1 D5 TNO
Communications request for request-response telegrams.
0 D0-4 MP-Bus telegram according to specification without length and
cross parity.
0 D5 TNO
1 D0-4 MP-Bus telegram according to specification without length and
cross parity.
F2K_COM_T1 4
1 D5 TNO
Communications request for request-response telegrams.
The module returns the transmitted MP-Bus command byte with
the reply.
0 D0-4 MP-Bus telegram according to specification without length and
cross parity.
0 D5 TNO
1 D0-4 MP-Bus telegram according to specification without length and
cross parity.
F2K_COM_T2 5
1 D5 TNO
Call function macro.
0 D0 Function macro ID.
0 D1-4 Function macro parameters.
0 D5 TNO
1 D0-4 Function macro parameters.
F2K_FM 6
1 D5 TNO

750-643 [MP-Bus Master Module] •19
Data transfer
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.1.8.2 Message codes for the extended status byte
MSG_CODE DPID DATA Description
Null message
0 D0-4 not used
0 D5 TNO
1 D0-4 not used
K2F_NULL 0
1 D5 TNO
ERR=0 MP-Bus driver initialization has been carried out.
0 D0-4 not used
0 D5 TNO
1 D0-4 not used
1 D5 TNO
ERR=1
0 D0 Error number
0 D1 Extended error status
0 D2-D4 not used
0 D5 TNO
1 D0-D4 not used
K2F_INIT 1
1 D5 TNO
ERR=0 Module test (transparent MP-Bus communication).
0 D0 Number of data received max. 9 (0D1-5 and 1D0-3)
0 D1-4 Data received
0 D5 TNO
1 D0-D3 Data received
1 D4 not used
1 D5 TNO
ERR=1
0 D0 Error number
0 D1 Extended error status
0 D2-D4 not used
0 D5 TNO
1 D0-D4 not used
K2F_TEST 2
1 D4 TNO
ERR=0 Transmission confirmation. MP-Bus communication for
broadcast telegrams.
0 D0-4 not used
0 D5 TNO
1 D0-4 not used
1 D5 TNO
ERR=1
0 D0 Error number
0 D1 Extended error status
0 D2-D4 not used
0 D5 TNO
1 D0-D4 not used
K2F_COM_T0 3
1 D5 TNO
ERR=0 Communications confirmation for request-response telegrams.
0 D0-4 MP-Bus telegram according to specification including length
and cross parity.
0 D5 TNO
1 D0-4 MP-Bus telegram according to specification including length
and cross parity.
1 D5 TNO
ERR=1
0 D0 Error number
0 D1 Extended error status
0 D2-D4 not used
0 D5 TNO
1 D0-D4 not used
K2F_COM_T1 4
1 D5 TNO

20 •750-643 [MP-Bus Master Module]
Data transfer
WAGO-I/O-SYSTEM 750
I/O Modules
MSG_CODE DPID DATA Description
ERR=0 Communications request for request-response telegrams.
The module returns the transmitted MP-Bus command byte
with the reply.
0 D0 Master command sent.
0 D1-4 MP-Bus telegram according to specification without length and
cross parity.
0 D5 TNO
1 D0-D4 MP-Bus telegram according to specification without length and
cross parity.
1 D5 TNO
ERR=1
0 D0 Error number
0 D1 Extended error status
0 D2-D4 not used
0 D5 TNO
1 D0-D4 not used
K2F_COM_T2 5
1 D5 TNO
ERR=0 Module test (transparent MP-Bus communication).
0 D0 Function macro ID.
0 D1-4 Macro-specific result parameters.
0 D5 TNO
1 D0-D4 Macro-specific result parameters.
1 D5 TNO
ERR=1
0 D0 Error number
0 D1 Extended error status
0 D2 Function macro ID.
0 D3-D4 not used
0 D5 TNO
1 D0-D4 not used
K2F_FM 6
1 D5 TNO
2.1.1.8.3 Use of the module 750-643 with programmable fieldbus controllers
Appropriate IEC 61131-3 function blocks and libraries are available for
WAGO-I/O-PRO 32 and WAGO-I/O-PRO CAA in order to read out the
process data of the MP-Bus Master Module with a programmable fieldbus
controller (PFC).
In the WAGO-I/O-PRO application, the "FbMpBusMaster" function module
accepts the data packets from several module bus cycles (module bus
communication).
After the packets have been assembled to form a telegram, this module checks
the telegram for errors (protocol security).
In order that the master can communicate with the slaves, each slave must be
assigned a unique address. The nodes are addressed with the
"FbMpBusAddressing" module.
Further function modules subsequently undertake the evaluation and
processing of the telegram content.