Metz Connect MR-DI10 User manual

2. Declaration of Conformity
The device was tested according to the applicable standards.
Conformity was proofed. The declaration of conformity is
available at the manufacturer BTR NETCOM GmbH.
Notes Regarding Device Description
These instructions include indications for use and mounting of
the device. In case of questions that cannot be answered with
these instructions please consult supplier or manufacturer.
The indicated installation directions or rules are applicable to
the Federal Republic of Germany. If the device is used in other
countries it applies to the equipment installer or the user to
meet the national directions.
Safety Instructions
Keep the applicable directions for industrial safety and preventi-
on of accidents as well as the VDE rules.
Technicians and/or installers are informed that they have to
electrically discharge themselves as prescribed before installati-
on or maintenance of the devices.
Only qualified personnel shall do mounting and installation
work with the devices, see section “qualified personnel”.
The information of these instructions have to be read and un-
derstood by every person using this device.
Symbols
Warning of dangerous electrical voltage
Danger
means that non-observance may cause risk of life,
grievous bodily harm or heavy material damage.
Qualified Personnel
Qualified personnel in the sense of these instructions are
persons who are well versed in the use and installation of such
devices and whose professional qualification meets the require-
ments of their work.
This includes for example:
•Qualification to connect the device according to the VDE
specifications and the local regulations and a qualification to
put this device into operation, to power it down or to activate
it by respecting the internal directions.
•Knowledge of safety rules.
•Knowledge about application and use of the device within the
equipment system etc.
1. Description
The Modbus module with 10 digital inputs is designed for local
switching operations. It is suitable to record potential-free swit-
ching states as for example electrical limit switches of
ventilation valves or auxiliary contacts of power contactors. The
inputs can be operated as contact and voltage inputs (A1, 24
VAC/DC, jumper J - A2) or with actuation to GND (A2, jumper
J - A1), depending on the setting of the jumper J. The inputs can
be scanned via a Modbus-Master. Setting of the slave address, bit
rate and parity is done with the two address
switches (x1 / x10) on the front. Possible settings are addresses
00 to 99 and bit rates 1200, 2400, 4800, 9600, 19200, 38400,
57600 und 115200 Bd.
The device does not participate in bus communication if the
address is 00 (reserved for broadcast commands).
8440/899288
Digital Input Module
MR-DI10
1108311319 5. Connection Diagram
4. Wiring Diagram3. Technical Data
Modbus Interface
Protocoll Modbus RTU
Transmission rate 1200 ... 115200 Bd
(factory setting 19200 Bd Even)
Cabling RS485 two wire bus with voltage
equalizing cable in bus / line topology
Supply
Operating voltage range 20 ... 28 V AC/DC (SELV)
Current consumption 85 mA AC / 75 mA DC
Relative duty cycle 100 %
Input
Input voltage 30 V DC
High-signal recognition >10 V AC/DC
Housing
Dimensions WxHxD 1.4 x 2.8 x 2.6 in. (35 x 70 x 65 mm)
Weight 83 g
Mounting position any
Mounting standard rail TH35 per IEC 60715
Mounting in series the maximum quantity of modules
without space connected in line is limited to 15 or to
a maximum power consumption of
2 Amps (AC or DC) per connection to
the power supply.
For any similar block of additional
modules a separate connection to the
power supply is mandatory.
Material
Housing Polyamide 6.6 V0
Terminal blocks Polyamide 6.6 V0
Cover plate Polycarbonate
Type of protection
(IEC 60529)
Housing IP40
Terminal blocks IP20
Terminal blocks
Supply and bus
4 pole terminal block max. AWG 16 (1,5 mm²) solid wireg
max. AWG 18 (1,0 mm²) stranded wire
Wire diameter min. 0.3 mm up to max. 1.4 mm
(terminal block and jumper plug are
included to each packing unit)
Module connection
Input/Output max. AWG 12 (4.0 mm²) solid wire
max. AWG 14 (2.5 mm²) stranded wire
Wire diameter min. 0.3 mm up to max 2.7 mm
Temperature range
Operation -5 °C ... +55 °C
Storage -20 °C ... +70 °C
Protective circuitry polarity reversal protection of
operating voltage
polarity reversal protection of supply
and bus
Display
Operating and bus activity green LED
Error indication red LED
Status of the inputs yellow LED
METZ CONNECT GmbH | Im Tal 2 | 78176 Blumberg | Germany
Phone [phone] | Fax [phone]
Additional documentation see www.metz-connect.com

8. Connection examples
Connection examples 1+2
5 C12
C16810
4
24V 24V
ERROR
B+
A -
MR-DI10
B+
A -
+24V
GND
+24V
GND
BUSY
MODBus RTU
x1
x10
79
1 3
30VAC/DC
GND
Jumper below
the faceplate
Connection example 3
5 C12
C16810
4
24V 24V
ERROR
B+
A -
MR-DI10
B+
A -
+24V
GND
+24V
GND
BUSY
MODBus RTU
x1
x10
79
1 3
30 V AC/DC
GND
Jumper below
the faceplate
7. Bit rate and Parity setting
The bit rate and parity can be set in the programming mode when
ajumper is plugged behind the front cover of the module. This
jumper is removed in normal mode. A connection to the bus is
not required during bit rate setting.
The bit rate of the modules can be set in the following way:
1. remove the front cover of the module;
2. plug a jumper to the two middle pins of the 4 pole header
between the red and green LED (Á);
3. set the desired parity and bit rate with the address switches
(Â) in accordance to the chart below.
4. switch on the supply voltage of the module; it is now per-
manently saving the bit rate in an EEPROM;
5. switch off the supply voltage of the module;
6. remove the jumper from the header and place the front
cover.
If the settings differ from the settings specified in the chart the
factory setting applies.
Factory setting: 19200 Bd Even
5 C12
C16810
4
24V 24V
ERROR
B+
A -
MR-DI10
B+
A -
+24V
GND
+24V
GND
BUSY
MODBus RTU
x1
x10
Jumper below
the faceplate


79
1 3
21
6. Mounting
Power down the equipment
Mount the module on standard rail (TH35 per IEC 60715 in
junction boxes and/or on distribution panels).
Installation
Electric installation and device termination shall be done by
qualified persons only, by respecting all applicable
specifications and regulations.
Plug in the terminal block for bus connection
43
5 mm
65
The module can be aligned without interspace. Use the jumper
plug to connect bus and supply voltage when the modules are
mounted in series.
The maximum quantity of modules connected in line is
limited to 15 or to a maximum power consumption of 2
Amps (AC or DC) per connection to the power supply. For
any similar block of additional modules a separate
connection to the power supply is mandatory.
Connect the cable for bus supply
Mounting in series
Switch
x1 1 2 3 4 5 6 7 8
Bitrate
(Bit/s) 1200 2400 4800 9600 19200 38400 57600 115200
Switch
x10 123
Parity even odd none
9. Software description
9.1 I/O Commands
„02 (0x02) Read Discrete Inputs“
Request
Valid Input Starting Address 0 .. 9
Valid Quantity of Inputs 1 .. 10
Response
Byte Count 1 or 2
Input Status Bit0 .. Bit9
Information
1= Status input closed
0= Status input open
“04 (0x04) Read Input Registers”
Request
Valid Register Starting Address 0
Valid Quantity of Registers 1
Response
Byte Count 2
Values Register Input Status Bit 0..9 ( MR-DI10)
Continuation Software desription
9.2 Bit rate setting with Modbus command
Parity and bit rate have the same value as when setting them by
address switch.
If Parity or Bit has the value 0, no setting or storage is carried out.
The register content is stored in the EEPROM.
“06 (0x06) Write Single Register”
Request
Valid Register Address 0x41 ( 65 )
Valid Register Value 2 Bytes
Bit 15-8: Magic-Number 0x53 = 83 as protection against
accidental writing. The command will be further
analysed only with this number.
Response
Echo of Request
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0x53 Parity Bit rate
Bit 3-0 1 2 3 4 5 6 7 8
Bit rate 1200 2400 4800 9600 19200 38400 57600 115200
Bit 7-4 1 2 3
Parity even odd none
METZ CONNECT GmbH | Im Tal 2 | 78176 Blumberg | Germany
Phone [phone] | Fax [phone]
Additional documentation see www.metz-connect.com

Continuation Sotftware Description
Example for a frame:
Slave address 0x12 Setting of rotary switch (18)
Function 0x06 Write Single Register
Register address Hi 0x00
Register address Lo 0x41 Bit rate and parity (65)
Register contents Hi 0x53 Magic-Number
Register contents Lo 0x15 Parity Even, 19200 Baud
All devices can be switched simultaneously with a Broadcast com-
mand (Slave address 0x00) However, it is advised not to do so as
this can cause problems:
- Devices from other manufacturers may have under this
address a register for a different purpose that will then
be operated in the wrong way.
- There is no feedback from the individual devices.
Consequently the control cannot immediately recognize
if the command was correctly received.
It is safer to address and switch each device individually.
The device will then answer with the old settings of parity and
bit rate. Switching will take place only afterwards. However, the
answer can get lost if the bus is disturbed.
When all devices are switched; it is advised to check communica-
tion. Any function of the device providing a feedback is suitable.
If a single function is to be used being independent from the
process periphery then the function „Diagnostic“ sub-function
„Return Query Data“ is suitable, it returns the transferred data.
If bit rate and parity setting of a device are unknown it is possible
to address the device successively with all combinations of bit
rate and parity until the device answers. Try the most likely com-
binations first. Try the lower bit rates last as they take longer.
9.3 General Commands
“08 (0x08) Diagnostics”
Subfunction “0 ( 0x0000) Return Query Data”
Data Field Any
Response: Echo of Request
Subfunction “1 (0x0001) Restart Communication Option”
Data Field 0x0000 oder 0xFF00
Response: Echo of Request
Action: Clears all Error Counters, Restarts node
Subfunction “4 (0x0004) Force Listen Only Mode”
Data Field 0x0000
No Response
Action: No response until Node Reset or Function Code 08
Subcode 01
Subfunction “10 ( 0x000A) Clear Counters”
Data Field 0x0000
Response: Echo of Request
Action: Clears all Error Counters
Subfunction “11 ( 0x000B) Return Bus Message Count”
Data Field 0x0000
Response: Quantity of messages that the remote device has
detected on the communications system since its last restart,
clear counters operation, or power–up.
Subfunction “12 ( 0x000C) Return Bus Communication Error
Count”
Data Field 0x0000
Response: Quantity of errors encountered by the remote
device since its last restart, clear counters operation,
or power-up. (CRC, Length <3, Parity, Framing)
Continuation Sotftware Description
Subfunction “13 ( 0x000D) Return Bus Exception Error Count”
Data Field 0x0000
Response: Quantity of MODBUS exception responses returned
by the remote device since its last restart, clear counters
operation, or power-up.
Subfunction “14 (0x000E) Return Slave Message Count”
Data Field 0x0000
Response: quantity of messages addressed to the remote
device, or broadcast, that the remote device has processed
since its last restart, clear counters operation, or power-up.
Subfunction “15 (0x000F) Return Slave No Response Count”
Data Field 0x0000
Response: Quantity of messages addressed to the remote
device for which it has returned no response (neither a normal
response nor an exception response), since its last restart, clear
counters operation, or power-up.
“43 /14 (0x2B / 0x0E) Read Device Identification”
Request
Read Device ID code: 0x01
Object ID 0x00
Response
Device ID code 0x01
Conformity level 0x01
More follows 0x00
Next object ID 0x00
Number of objects 0x03
Object ID 0x00
Object Length 0x03
Object Value “BTR”
Object ID 0x01
Object Length 0x07
Object Value “MR-DI10”
Object ID 0x02
Object Length 0x04
Object Value “V1.0”
METZ CONNECT GmbH | Im Tal 2 | 78176 Blumberg | Germany
Phone [phone] | Fax [phone]
Additional documentation see www.metz-connect.com