MODBUS I/O module
16 Isolated
Digital Inputs
mod.
IO-MB/DI-16LV
ASCON spa
20021 Baranzate (Italy)
Fax +39 02 350 4243
www.ascon.it
[email protected]
mod.
IO-MB/DI-16LV
E
M . U . I O - M B / D I - 1 6 LV - 3 / 0 9 . 0 2
C o d .
J 3 0 - 6 5 8 - 1 A D I - 1 6 LV E
ISO9001 Certified
Functional Block Diagram
16 optoisolated digital inputs with
special functions
- Latched inputs
.
Characteristics
Local Mode
Local Value
Remote
Transmit
Input
DI 1...16
Module
config.
Latched
DI 1...16
Technical data
A
PPLICABLE STANDARDS
The DI-16LV module is suited for the Modbus-IDA Organization protocol [1] and imple-
ments a subset of it, as explained in the text. MODBUS is a registered trademark of
Schneider Automation Inc.
A
W
ARNING
The product described in this manual should only be installed, operated and maintained by
qualified application programmers and software engineers who are familiar with automation
safety concepts and applicable national standards.
Number of channels
16
Polarity (EN 61131-2 type 2)
Sink
UL (state 0)
-3...+11/5 Vdc
UT (transition)
5...11 Vdc
UH (state 1)
11... 30 Vdc
Input impedance
5 k
Ω
ON/OFF delay
5 ms
Max. monostable time
65 s
General
Environment
Operating
Storage
Temperature
-10...+65°C
-40...+85°C
5...95% non condensing
5...95% non condensing
Relative
Appropriate measures must
For a short period, slight
Humidity
be taken against
condensation may appear
humidity >85%
on the housing
Mounting
Vertical, free air
Protection
IP20
Vibrations (3 axes) 10...57Hz 0.0375mm, 57...150Hz 0.5g
Shock (3 axes)
15g, 11ms half sine
3 way isolation
Ch. to ch.: no isolation; ch. to logic: 800 Vp
(see last page)
serial bus to logic: 800 Vp; power supply to logic: 2.5 kVp
Power supply
24 Vdc; –15...+25%
Consuption: 3 W
Overvoltage protection 40 Vdc
Dimensions
L: 76; H: 110; W: 65;
Weight: 220g
Safety regulations
Isolation class II
(50 Vrms), Installation cathegory II
EN61010-1
Pollution degree 2
CE marking
EN61131-2
Function Codes used by the module
The function codes provided for all the modules are a subset of the “Public Function
Codes”, validated by the Modbus-IDA Organization.
Function 01 and Function 02 can be used to read both digital output and digital input.
Function 03 and Function 04 can be used to read both output and input registers.
Functions
(hex)
Physical Digital Inputs
Read Inputs status
02
02
Bit
Internal Bits Or
Read Coil status
01
01
access
Physical Digital
Write Single Coil
05
05
Data
output
Write Multiple Coils
15
0F
access
Physical Input Registers
Read Input Register
04
04
Word
Internal Registers
Read Holding Registers
03
03
access
Or Physical Output
Write Single Register
06
06
Registers
Write Multiple Registers
16
10
Diagnostics
Read Exception status
07
07
Diagnostics
08
08
Diagnostics
MODBUS Exception Responses:
Code Name
Meaning
01
ILLEGAL FUNCTION
The function code received in the query is not an
allowable action for the server (or slave)
02
ILLEGAL DATA
The data address received in the query is not an
ADDRESS
allowable address for the server (or slave).
03
ILLEGAL DATA
A value contained in the query data field is not an
VALUE
allowable value for server (or slave)
07
NEGATIVE
The server (or slave) is in the wrong state to process
ACKNOWLEDGE a
request of this type or an attempt to write to a read
- NAK
only address has been made
Code 07 has not been provided by Modbus.org Protocol. Use it for ASCON products com-
patibility only.
Function Code 07:
Read Exception Status:
Function Code 08:
Diagnostics
The only supported sub code is 0 – Return Query Data
Digital Input writing attempted (1)
Dummy Data Field (0 fill) (1)
Output Data Valid (1)
Local Value state (1)
Invalid Input Data (1)
bit
7
6
5
4
3
2
1
0
status
0
0
0
X
X
X
X
X
User manual
Contents
-
Characteristics
- Functional Block Diagram
-
Function Codes used by the module
-
Diagnostics
-
MODBUS Address Map organisation
-
Hardware Setup
- Common
parameters
- Module
parameters
- Parameters Store/Restore
- Three way isolation diagram
- MODBUS Map summary
DI-16LV-uso-e 3-02-2009 10:43 Pagina 1
