ascon Q2 IO-MB/DI-16LV User Manual Download Page 3

Standard Inputs

Digital Inputs Name

Access Notes

1

DI-1

R

R

Image of every physical input state

16

DI-16

R

Latched Inputs

Digital Outputs Name

Access Notes

101

Latched DI-1 R/W

Reading:

Image of physical Inputs,

R/W

staticised on the leading edge 0-1 (latch)

116

Latched DI-16 R/W

Writing:

Writing “0” resets the single latch

Local Values

Output Registers Name

Access Notes

While in Loopback state the 0...15 bits of this

301

LocalV

R/W

register are transferred to 1..16 digital 
inputs.

bit

15 14 13 12 11 10

9

8

7

6

5

4

3

2

1

0

Channel 16 15 14 13 12 11 10 9

8

7

6

5

4

3

2

1

MODBUS Map summary (with default values)

Module Identity Registers

Output Registers Name

Access

Notes

121

ManuCode

R

Manufacturer Code

122

ProdCode-1

R

Product Code # 1

123

ProdCode-2

R

Product Code # 2

124

RelCode-1

R

Hardware Release Code

125

RelCode-2

R

Software Release Code

126

SpecialCode R

Special Product Code

127

ProdCode-3

R

Product Code # 3

User defined Registers

Output Registers Name

Access

Notes

189

Usr#1

R/W

User Defined Register # 1 (retentive)

190

Usr#2

R/W

User Defined Register # 2 (retentive)

...

198

Usr#10

R/W

User Defined Register # 10 (retentive)

Module parameters

Modbus Module

Name

Access Description

default

address digital I/O

(hex)

0

1

DI-1

R

Input 1 

0

...

R

Input n 

0

15

16

DI-16

R

Input 16

0

100

101

Latched DI-1 R/W

Latched Input 1 

0

...

R/W

Latched Input n 

0

115

116

Latched DI-16 R/W

Latched Input 16

0

396

397

Parity

R/W

0

: Parity Disabled; 

1

: Parity Enabled

0

397

398

EvenOdd

R/W

0

: Parity Even; 

1

: Parity Odd

0

Modbus Module

Name

Access Description

default

address registers

(hex)

120

121

ManuCode

R

Manufacturer Code

0258

121

122

ProdCode-1 R

Product Code # 1

3136

122

123

ProdCode-2 R

Product Code # 2

4C56

123

124

RelCode-1

R

Hardware Release Code

124

125

RelCode-2

R

Software Release Code

125

126

SpecialCode R

Special Product Code

126

127

ProdCode-3 R

Product Code # 3

4449

188

189

Usr#1

R/W

User Defined Register # 1 

FFFF

189

190

Usr#2

R/W

User Defined Register # 2 

FFFF

...

Usr#n

R/W

User Defined Register # n 

FFFF

197

198

Usr#10

R/W

User Defined Register # 10 

FFFF

300

301

LocalV

R/W

Local values 1...16

0000

397

398

Ch_LO

R/W

Channel Number 16-1 selection

0000

398

399

ModuleCom

R/W

Module Command Register

0000

399

400

StackCom

R/W

Modbus Stack Command Register

0000

800

801

NodeA

R/W

Node Address Register

00F7

801

802

BaudR

R/W

Baud Rate Register

0004

Reference documents

Warranty: 3 years excluding defects due to improper use

The user should refer to the following list of documents:
[1] MODBUS.ORG: MODBUS Application Protocol Specification V1.1a, June 2004

Accessories, Spare Parts and Warranty

Power Supply 45W 24Vdc 2A

AP-S2/AL-DR45-24

Power Supply 120W 24Vdc 5A

AP-S2/AL-DR120-24

Additional Terminal Block 2x11

AP-S2/TB-211-1

Female Plug 11 Screw clamp

AP-S2/SPINA-V11

Female Plug 11 Spring clamp

AP-S2/SPINA-M11

RJ45 terminated cable 14cm

AP-S2/LOCAL-BUS76

RJ45 terminated cable 22cm

AP-S2/LOCAL-BUS152

Termination Adapter

AP-S2/TERM-CAN

This module allows parameters to be saved in a non volatile memory. In order
to avoid storing configuration data parameters (registers 801...1000) by mista-
ke, storage is only executed when a specific signature is written to the appro-
priate register. The signature is “ST”.

Similarly, the default values of parameters are restored. On receipt of the correct
signature in the appropriate register, the device restores the default parameters.
The signature is “RS”.

The new configuration becomes active after a reset, i.e. after a “Power Down”
or a reset command (signature “RT”). See Register 400.

es.

Node address change by serial communications:

1.

Write the new address in register 801 (NodeA). - Write value.

2.

Write 0x5354 (ASCII code “ST”) to register 400. - Store value.

3.

Write 0x5254 (ASCII code “RT”) to register 400. - Cold reset.

The retentive device management data (registers 401... 800) are immediately
valid after writing. To maintain the values after a power OFF/ON cyle, the
command Store (“ST”) must be executed.

Parameter Store/Restore

Three way isolation diagram

2500Vp

Power supply

Serial

bus

Logic

Input

channels

1 - 16

800Vp

A

W

ARNING

The data written at retentive and configuration registers are stored in EEPROM (see “Address
Map organisation” paragraph for details). This type of memory has a limited number of writing
cycles. Also if this number is very high (about 100000 cycles), this limit can be easily reached
if the storing process is forced through a serial communications line. Please check that the
storing procedure of these registers is not performed automatically.

DI-16LV-uso-e  3-02-2009  10:43  Pagina 3

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