S+S Regeltechnik HYGRASGARD KFTM-LQ-CO2-Modbus, HYGRASGARD AFTM-LQ-CO2-Modbus, AERASGARD ALQ-CO2-Modbus, AERASGARD AFTM-LQ-CO2-Modbus, AERASGARD ACO2-Modbus User Manual

HYGRASGARD® AFTM- ⁄ KF TM - LQ - CO2 - Modbus

G

The maintenance-free microprocessor-controlled on-wall or duct sensor with Modbus connection with/without optional display is an all-in- one device used
for det ecting all rele vant measured values, such as humidity, temperature, CO
and control of the ent ire room climate. It measures C O
/ HIGH, temperatures in the range from –35...+80 °C as well as relative air humidity of 0...100 % r.H. Relative humidit y (% r.H.) is the quotient of water
vapour partial pressure divided by the sat uration vapour pressure a t the respective gas t emper atur e. A digital, long-term stable sensor as a measuring
element for relative humidity and temperature guarantees exact measurement results. T he CO
sensor (non-dispersive inf ra-red technology). The detection range of the sensors is calibr ated f or sta ndard applica tions such as monitoring residential
rooms and conf erence rooms. Room ventilation on an as-needed basis, improved well-being and cust omer benefit, increased co mfor t as well as reduced
operating costs through energy c onser vation are just some of the benefits of employing the AERASGARD
there are applications for C O
crucial fact or in this respect is that both of these measurands are not convertible into each ot her and derivations
An NDI R - CO

measuring instrument measures selectively and cannot det ect any VOCs; a VOC mixed gas sensor cannot detec t CO2 molecules.

2

measu rements, for VOC measurements, bu t from our perspective, above all, for a

2

in the range from 0...5000 ppm, VOC in one of three select able sensitiv ity levels LOW / MEDIUM

2

concentration and air quality (VOC), thus enabling effective monitoring

2

content of the air is measured using an opt ical NDIR

2

®

CO2. The abo ve explanations demo nstrate that

combination of both measurands. The

to or fr om one another canno t be made.

Rev. 2018 - V22 G B

TECHNICAL DATA

Power supply: 24 V AC ⁄ D C (± 10 %)
Power c onsumption: < 4.8 W ⁄ 24 V DC typical; < 6.8 VA ⁄ 24 V AC typical; peak current 200 mA
Data points: temperature, rela tive humidit y, air quality (VOC), carbon dioxide (CO

HUMIDITY

Sensors: digital humidity sensor with integrated temperature sensor, low hysteresis, high long-term stability

plastic

Sensor protection:

sinter filter, Ø 16 mm, L = 35 mm, exchangeable (optional
Measur ing range, humidity: 0...100 % r. H.
Opera ting range, humidity: 0...95 % r. H. (non- precipitating air)

± 2.0 %

Devia tion hu midity: typic ally

(20...80 % r. H.) at +25 °C, otherw ise ± 3.0 %

TEMPERATURE

Measur ing ran ge, temp eratu re: –35...+80 °C
Operating range, temperature: –10...+60 °C
Deviation, temperature: ± 0.2 K at + 25 °C

AIR QUALITY (VOC)

VOC sensor:
VOC measuring range: 0...100 % air quality; with r efer ence to calibration gas;

VOC sensor (metal oxide)

with automatic calibration

(VOC = volatile organic compounds)

multi-range switching

VOC measuring accura cy: ± 20 % final value (with reference to the calibration gas)
Service life: > 60 months (under normal load conditions)

CARBON DIOXIDE (CO2)

CO2 sensor:

Optical NDIR sensor (no n-dispersive infr a-red technology) incl. atmospheric air pr essur e compensation (up to 1100 mbar)

with automatic and manual calibration

CO2 measuring range: 0...5000 ppm

measur ing accuracy: ± 30 ppm ± 3 % of measur ed value

CO

2

temperature dependence:

CO

2

Press ure dep endenc e: ± 0.13 % ⁄ m m Hg

± 5 ppm ⁄ °C o r ± 0.5 % of me asured value ⁄ ° C (whi chever is the g reate r)

Long-term stability: < 2 % in 15 years
Gas exchange: by diffusion
Bus parameters:
Bus inte rfa ce: RS 485,

In the absence of current delivery

galvanically isolated,

In case of a g reat er numb er of dev ices, RS 4 85 transceivers mu st be used.

Bus pr oto col: Modbus (RTU-Mode), address range 0...

(under currentless conditions) can be

bus ter mination can be activated v ia DIP switch. Up to 32 dev ices possible in one segment.

247

selectable
Baud ra te: 9600, 1920 0, 38400 Baud
Stat us indic ator: Green L ED = Telegram valid / red LED = Telegr am error
Signal filtering: 4 s / 32 s

Ambient temperature: –10...+ 60 °C
Response time: < 2 minutes
Electrical connection: 0.2 - 1.5 mm
Enclosure: plastic, UV-st abilised, material polyamide, 30 % glass-globe reinforced,w ith quick-locking screws (slotted ⁄

Phillips head combination), colour tra ffic white (similar t o RAL 9016),,enclosure c over for displa y is transpare nt!

2

, via push -in ter minal

Enclosure dimensions: 126 x 90 x 5 0 mm ( Tyr 2)
Cable gland: 2 x M 16 x 1.5; including strain relief, exchang eable
Protective tube:

KCO2 /

KLQ - CO2 /

PLEUROFORMTM, mater ial: poly amide (PA6), with torsion protection, v

with out fil ter: NL = 2 02.5 mm, wi th plast ic sinter filter: NL = 235 mm (optional with metal sinter filter: NL = 227 mm )

AFTM - C O2 /
in stainless s teel,

KFTM - C O2 /

AFTM - L Q - CO2 - Modbus:

Ø 16 mm, with plastic sinter f ilter: NL = 55 mm (optional with met al sinter filter: NL = 47 m m)

KFTM - L Q - CO2 - Modbus (Paten t No. DE 10 2014 010 719.1):

Process connection: channel sensor s using a flange (in cluded in the scope of delivery), on-wall sensor s using screws
Prot ection class: III (according to EN 6 0 730)
Protection type: IP 65 (ac cording to EN 60 529) enclosure only! (PLEUROFORM IP 30)
Standards: CE-conformity, electr omagnetic compatibility a ccording to EN 61 326, EMC directiv e 2014 ⁄ 30 ⁄ EU
Optional:

three-line display with illumination,

to displa y the actual humidity, actual t emper atur e, air quality and / or the actual CO

cuto ut appr ox. 70 x 40 mm (W x H),

14

), atmospheric pressure

2

metal

sinter filter, Ø 16 mm, L = 32 mm)

VOC sensitivity low, medium, high

configured and addr essed via DIP switch!

= 30 m/s (air), Ø 20 mm,

max

content

2

HYGRASGARD® AFTM- ⁄ KF TM - LQ - CO2 - Modbus

offset

°C

r.H.

VOCCO²

mode address

12345678

ON

DIPA

123456

ON

DIPB

zero

CO²

VOC

1

2

3

4

B
A

GND

U+

G

Rev. 2018 - V22 G B

Display

standard

By default, the display indicat es the f ollowing measurements with the
corresponding units

CO2 content in ppm,
temperature

Backlighting is provided for impro ved legibility.

The Modbus int erface allows the display to be
both in t he 7 segment range and in the do t-matrix range.

Display - individually

programmable

cyclically

in °C,

relative humidity

air quality

and consecutively:

(VOC) in %,

in % r.H.

individually

configured,

Display

alternative output variables

The Modbus int erface can be used to program an

variable

instead of the standard display.

In this case, the first line indicates the value while the second line
indicates the corresponding unit
The index in the thir d line indicates the display type:

Index 1

= CO2 content in

Index 2

= air quality (VOC) in

Index 3

= temperature in

Index 4

= relative humidity in

Index 5

= atmospheric pressure in

ppm

°C

statically

%

% r.H.

hPa

alternative output

.

Schematic diagram

Plug for
display

B

4
3

A

2

GND

1

U+

Zero point calibration

The sensors ar e pre-set and c alibra ted at t he factory.
Each measuring channel has a separate offset potentiometer
for subsequent adjustment of the measurement.
The adjusting range is ± 10 % of the measuring range.

offset

DIP A: Bus address
DIP B: Bus parameters

(Baud rate, parity ...)
Telegram indicator

Reception (LED green)
Error (LED red)

Offset correction

LED (internal status)

CO²

zero

mode address

ON

123456

VOC

DIPB

r.H.

VOCCO²

ON

DIPA

12345678

B

4
3

A

2

GND

1

U+

°C

Reset button

15

AERASGARD® AFTM - LQ - CO2 - Modbus

G

Rev. 2018 - V22 G B

WS-03

Weather and sun

protection hood

(optional)

ACO2-Modbus

ALQ - CO2-Modbus

without filter

(standard)

AERASGARD® ACO2 - Modbus
AERASGARD® ALQ - C O2 - Modbus
AERASGARD® AFTM - CO2 - Modbus

for humidity, temperature and CO2 content, Deluxe

AERASGARD® AFT M - LQ - CO2 - Modbus

for humidity, temperature, CO2 content and air quality (VOC), Deluxe

Type ⁄ WG02 Measuring Range

-Modbus

AC O

2

ACO2 MODBUS – – 5000 ppm – 1501-7110-6001-200
ACO2 MODBUS D ISPL AY – – 5000 ppm – ■ 1501-7110-6071-200

ALQ - CO2-Modbus

ALQ-CO2 MODBUS – – 5000 ppm 0...100 % 1501-7111-6001-200
ALQ-CO2 MODBUS DISPLAY – – 5000 ppm 0...100 % ■ 1501-7111-6071-200

AFTM - C O2-Modbus

AFTM-CO2 MODBUS 0...100 % r.H. –35...+80 °C 5000 ppm – 1501-7116-6001-200
AFTM-CO2 MODBUS DI SP LAY 0...100 % r.H. –35...+80 °C 5000 ppm – ■ 1501-7116-6071-200

AFTM - LQ - CO2-Modbus

AFTM-LQ-CO2 MODBUS 0...100 % r.H. –35...+80 °C 5000 ppm 0...100 % 1501-7118-6001-200
AFTM-LQ-CO2 MODBUS DISPL AY 0...100 % r.H. –35...+80 °C 5000 ppm 0...100 % ■ 1501-7118-6071-200
Not e: This unit

AFTM - CO2 - Modbus

AFTM - LQ - CO2 - Modbus

with plastic sinter filter

(standard)

AFTM - CO2 - Modbus

AFTM - LQ - CO2 - Modbus

with metal sinter filter

(optional)

On-wall sensor for CO2 content, Deluxe

On-wall sensor for CO2 content and air quality (VOC), Deluxe

Multifunctional on-wall sensor

Multifunctional on-wall sensor

Humidity Temperature CO

must not

be used as safet y-relevant device!

2

VOC

Display

Item No.

Accessories
SF-M Metal
WS-03 Weather and sun protection hood

sinter filter, Ø 16 mm, L = 3 2 mm, exchangeable stainless steel

V4A

, 200 x 180 x 150 mm, stainless steel 7100-0040-6000-000

16

(1.4 404 ) 7000-0050-2200-100

AERASGARD® KFTM - LQ - CO2 - Modbus

G

Rev. 2018 - V22 G B

MFT - 20 - K

Mounting flange,

plastic

KCO2-Modbus

KLQ - CO2-Modbus

without filter

(standard)

AERASGARD® KCO2 - Modbus
AERASGARD® KLQ - C O2 - Modbus
AERASGARD® KFTM - CO2 - Modbus

for humidity, temperature and CO2 content, Delu xe

AERASGARD® KF TM - LQ - CO2 - Modbus

for humidity, temperature, air quality (VOC) and CO2 content, Delu xe

Type ⁄ WG02 Measuring Range

-Modbus

KCO

2

KCO2 MODBUS – – 5000 ppm – 1501-8110-6001-200
KCO2 MODBUS D ISPL AY – – 5000 ppm – ■ 1501-8110-6071-200

KLQ - CO2-Modbus

KLQ-CO2 MODBUS – – 5000 ppm 0...100 % 1501-8111-6001-200
KLQ-CO2 MODBUS DISPLAY – – 5000 ppm 0...100 % ■ 1501-8111-6071-200

KFTM - C O2-Modbus

KFTM-CO2 MODBUS 0...100 % r.H. –35...+80 °C 5000 ppm – 1501-8116-6001-200
KFTM-CO2 MODBUS DISP L AY 0...100 % r.H. –35...+80 °C 5000 ppm – ■ 1501-8116-6071-200

KFTM - LQ - CO2-Modbus

KFTM-LQ-CO2 MODBUS 0...100 % r.H. –35...+80 °C 5000 ppm 0...100 % 1501-8118-6001-200
KFTM-LQ-CO2 MODBUS D ISPL AY 0...100 % r.H. –35...+80 °C 5000 ppm 0...10 0 % ■ 1501-8118-6071-200
Not e: This unit

KFTM - CO2 - Modbus

KFTM - L Q - CO2 - Modbus

with plastic sinter filter

(standard)

KFTM - CO2 - Modbus

KFTM - L Q - CO2 - Modbus

with metal sinter filter

(optional)

Duct sensor for CO2 content, Delu xe

Duct sensor for air quality (VOC) and CO2 content, Delu xe

Multifunctional duct sensor

Multifunctional duct sensor

Humidity Temperature CO

must not

be used as safet y-relevant device!

2

VOC

Display

Item No.

Accessories
SF-M Metal
MFT-20- K Mounting flange,

sinter filter, Ø 16 mm, L = 3 2 mm, exchangeable, stainless steel

V4A

plastic (included in the scope of delivery) 7000-0031-0000-000

17

(1.4 404 ) 7000-0050-2200-100

1 2 3 4 5 6 7 8

ON DIP A

1 2 3 4 5 6

ON DIP B

HYGRASGARD® AFTM- ⁄ KF TM - LQ - CO2 - Modbus

G

| Configuration

BUS ADDRESS

Bus addr ess

(binar y coded, value selectable from 1 to 247)

DIP 1 DIP 2 DIP 3 DIP 4 DIP 5 DIP 6 DIP 7 DIP 8

128 64 32 16 8 4 2 1
O N O N

Example shows 128 + 64 + 1 = 193 as Modbus address.

The device address in the range of
For switch positions 1 to 8 see the table on the back!

Address 0 is reserved for broadcast messages.
Addresses greater than 247 must not be assigned and are ignored by the device.
The DIP switches are binary-coded with the following values:

DIP 1 =

128

DIP 2 =

64

DIP 3 = 32 ............ DIP 3 = OFF

DIP 4 = 16 ............ DIP 4 = OFF

DIP 5 = 8 ............ DIP 5 = OFF

DIP 6 = 4 ............ DIP 6 = OFF

DIP 7 = 2 ............ DIP 7 = OFF

DIP 8 =

OFF OFF OFF OFF OFF

1 to 247

is set at DIP switch [A].

............ DIP 1 = ON

............ DIP 2 = ON

1

............ DIP 8 = ON The switch positions show n here r esults in the Modbus address

O N

MODBUS

DIP switch [A

Rev. 2017 - V14 GB intro

]

128 + 64 + 1 = 193

BUS PARAMETER

Baud rate

(selectable)

9600 baud
19200 baud
3840 0 baud
Reserved

Parity

(selectable)

EVEN
(numbered)

ODD
(numbered)

The baud rate (speed of transmission) is set at DIP switches 1 and 2 of DIP switch block [B].
Selectable are

Parity

is set at DIP switch 3 of DIP switch block [B].

Selectable are

Parity check

Selectable are
The

8N1 mode

The functionality of DIP switch 3 (parity) and DIP switch 4 (parity check) of DIP switch block [B] is therefore deactivated.
Selectable are 8N1

Bus termination

Selectable are
When bus parameters and bus address are changed at devices with

approx. 30 seconds.

S

DIP

DIP

1

O N
O N O N

OFF
OFF OFF

DIP 3Parity check

(on / of f)

Active

O N

(1 stop bit)

Inactive (no parity)

OFF

(2 stop bits)

9600 baud, 19200 baud, or

EVEN

or

ODD

– see table!

is activated via DIP switch 4 of DIP swit ch block [B].

active (1 stop bit)

is activated via DIP switch 5 of DIP swit ch block [B].

active

or

inactive (default)

is activated via DIP switch 6 of DIP swit ch block [B].

active

(bus termination resistance of 120 Ohm), or

2

OFF

O N

38400 baud

, or i

nacti ve (2 stop bits)

MODBUS

DIP switch [B

– see table!

– see table !.

DIP 48N1 mode

O N

OFF Inactive (default) OFF Inactive OFF

, i.e. no parit y check – see table!

]

(on / of f)

Active

inactive

(no bus termination) – see table!

display

, the respective settings ar e shown on the display for

DIP 5Bus termination

(on/of f)

O N

Active

DIP

O N

6

COMMUNICATION INDICATOR

Communication is indicated via two LEDs. Error-f ree received telegrams ar e signalized by the green LED lighting up, regardless of
the device address. Faulty telegrams or triggered Modbus exception telegrams ar e depicted by the red LED lighting up.

DIAGNOSTICS

An error diagnostic function is integrated

18

HYGRASGARD® AFTM- ⁄ KF TM - LQ - CO2 - Modbus

G

| Configuration

READOUT IN THE DISPLAY

By default, the display indicates the following measurements with the corresponding units

CO2 content in ppm,

air quality

(VOC) in %,

temperature

in °C,

relative humidity

in % r.H.

cyclically

Rev. 2017 - V14 GB intro

and consecutively:

The Modbus interface can be used to program an

CO2 content in ppm,

In this case, the first line indicat es the value while the second line indicates the corresponding unit
The index in the third line indicates the display type, e.g. atmospheric pressure (see the table "Function 06 Writ e Single
Register").

The Modbus interface allows the display screen to be individually configured, both in the 7 segment range and in
the dot-matrix range. This means that messages such as those f rom the PLC can be displayed.

individual display

For the
The register s 4x0002 to 4x0019 contain information about the characters and segments to be displayed.

The dot-matrix area is also pr ogrammable in the default setting (regist er 4x0001 contains the value 0).
In this case, the current measured value is automatically displayed in the 7-segment area.

The two left-aligned positions are represented by the regist er 4x00 03 (range -9...99). The value 0 switches
off the display of both positions. The display is only active if the r egister 4x0002 has positive values.

Composition of Segment Pattern (Register 4x0005)

Bit 0 ......

Bit 1 ......

Bit 2 ......

Bit 3 ......

Bit 4 ......

Bit 5 ......

Bit 6 ......

Bit 7 ......

Bit 8 ......

Bit 9 ......

Bit 10 ....

Bit 11 ....

Bit 12 ....

Bit 13 ....

Bit 14 ....

Bit 15 ....

Dot A
Dot B
Dot C
Dot D
Dot DP1

- ­Dot E
Dot DP2

- -

- -

- -

- -

- -

- -

- -

- -

air quality

(VOC) in %,

Reading:
Unit:
Index:

, the register 4x0001 (physical value displayed) must contain t he value 10.

Dot A Dot B Dot C Dot D Dot EDot DP1 Dot DP2

alternative output variable

temperature

1013
hPa
5

in °C,

relative humidity

instead of the standard display:

in % r.H., atmospheric pressure

statically

.

in hPa

Dot Matrix A H B I C J D K E L F M G N

19

HYGRASGARD® AFTM- ⁄ KF TM - LQ - CO2 - Modbus

G

ASCII Code Table for Dot Matrix Display Area

ASCII

Sign

32

Blank

33

!

34

“

35

#

36

$

37

%

38

&

40

(

41

)

42

*

43

+

44

,

45

-

46

.

47

/

48

0

49

1

50

2

51

3

52

4

ASCII characters or control characters are displayed as spaces.

ASCII

53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72

Sign

5
6
7
8
9

:
;

<

=

>

?
@
A
B
C
D
E

F
G
H

ASCII

73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
93

| Configuration

Sign

I
J

K

L

M

N
O
P
Q
R
S

T
U
V

W

X
Y
Z

[

]

ASCII

94
95
96
97
98

99
100
101
102
103
104
105
106
107
108
109
110
111
112
113

Sign

^
_
\
a
b
c
d
e
f
g
h
i
j
k
l

m

n
o
p
q

Rev. 2017 - V14 GB intro

ASCII

Sign

114

r

115

s

116

t

117

u

118

v

119

w

120

x

121

y

122

z

123

{

124

|

125

}

129

ü

132

ä

142

Ä

148

ö

153

Ö

154

Ü

223

°

20

HYGRASGARD® AFTM- ⁄ KF TM - LQ - CO2 - Modbus

G

| Telegrams

TELEGRAMS
Function 04 Read Input Register

Register Parameter Data Type Value Range

3x0001 CO2 Sampling 4 s Signed 16 bit 3 50...500 0 350...5000 p pm

3x0002 CO2 Filtering 32 s Signed 16 bit 35 0...5000 350...5000 ppm

3x0003 VOC Sampling 4 s Signed 16 bit 0...1000 0.0...100.0 % VO C

3x0004 VOC Filtering 32 s Signed 16 bit 0...1000 0.0...100.0 % VO C

3x0005 Temperature Sampling 4 s Signed 16 bit – 350…800 – 35.0...+80.0 °C

3x0006 Temperature Filtering 32 s Signed 16 bit –350…800 – 35.0...+80.0 °C

3x0007 Relative humidity Sampling 4 s Signed 16 bit 0...1000 0.0...100.0 % r.H.

3x0008 Relative humidity Filtering 32 s Signed 16 bit 0...1000 0.0...10 0.0 % r.H.

3x0009 Atmospheric pressure Sampling 4 s Signed 16 bit 700…1100 70 0...1110 h Pa

3x0010 Atmospheric pressure Filtering 32 s Signed 16 bit 700…1100 7 00...1110 hP a

Function 06 Write Single Register & Function 16 Write Multiple Register

Register Parameter (display) Data Typ e Value Range

4x0001 Physical parameter displayed Index on display Unsigned 8 bit 0…10 0 …10

Standard display (cyclic):

VOC in %,
CO2 in ppm,
temperature in °C,
relative humidity in % r.H.

alternative display (static):

CO2 in ppm 1 1

VOC in % 2 2

Temperature in °C 3 3

Relative humidity in % r.H. 4 4

Atmospheric pressure in hPa 5 5

Freely configurable display – 10

4x0002 7-Segment Value Signed 16 bit -999…9999 -999…9999

4x0003 7-Segment Value Signed 8 bit - 9…99 -9…99

4x0004 –

4x0005 Segment Pattern Unsigned 16 bit See Binary Pattern

4x0006 Dot Matrix Character A Unsigned 8 bit 0…255 ASCII character

4x0007 Dot Matrix Character B Unsigned 8 bit 0…255 ASCII character

4x0008 Dot Matrix Character C Unsigned 8 bit 0…255 ASCII character

4x0009 Dot Matrix Character D Unsigned 8 bit 0…255 ASCII character

4x0010 Dot Matrix Character E Unsigned 8 bit 0…255 ASCII character

4x 0011 Dot Matrix Character F Unsigned 8 bit 0…255 ASCII character

4x00 12 Dot Matrix Character G Unsigned 8 bit 0…255 ASCII character

4x0013 Dot Matrix Character H Unsigned 8 bit 0…255 ASCII character

4x0 014 Dot Matrix Character I Unsigned 8 bit 0…255 ASCII character

4x00 15 Dot Matrix Character J Unsigned 8 bit 0…255 ASCII character

4x0016 Dot Matrix Character K Unsigned 8 bit 0…255 ASCII character

4x0017 Dot Matrix Character L Unsigned 8 bit 0…255 ASCII character

4x0018 Dot Matrix Character M Unsigned 8 bit 0…255 ASCII character

4x0019 Dot Matrix Character N Unsigned 8 bit 0…25 5 ASCII character

– 0

Default
setting

21

HYGRASGARD® AFTM- ⁄ KF TM - LQ - CO2 - Modbus

G

| Telegrams

Function 05 Write Single Coil

Register Parameter Data Type Value Range

0x0001 Reset ( Auto zero) CO2 Bit 0 0 / 1 OFF - ON

0x0002 Reset ( Auto zero) VOC Bit 1 0 / 1 OFF - ON

0x0003 Automatic calibration (Automatic) CO2 Bit 2 0 / 1 OFF - ON

0x0004 Automatic calibration (Automatic) VOC Bit 3 0 / 1 OFF - ON

0x0005 VOC sensibility "low" Bit 4 0 / 1 OF F - ON

0x0006 VOC sensibility "medium" Bit 5 0 / 1 OFF - ON

0x0007 VOC sensibility "high" Bit 6 0 / 1 OF F - ON

Function 08 Diagnostics

The following

Sub Function
Code

00 Echo of transmission dat a

01 Restart Modbus

04 Activation listen-only mode No answer

10 Delete counter Echo telegram

11 Counter bus telegrams Unsigned 16 bit All valid bus telegrams

12 Counter communication errors

13 Counter exception telegrams Unsigned 16 bit Error counter

14 Counter slave telegrams Unsigned 16 bit Slave telegrams

15 Counter telegrams without answer Unsigned 16 bit Broadcast messages (address 0)

sub func tion codes

Parameter Data Type Answer

(Loopback)

(Reset listen-only mode)

(Parity, CRC, frame errors, etc.)

are supported

Unsigned 16 bit Faulty bus telegrams

Echo data

Echo telegram

Function 17 Report Slave ID

Composition of answer telegram

Byte No. Parameter Data Ty pe Answer

00 Number of bytes Unsigned 8 bit 6

01 Slave ID (device type) Unsigned 8 bit 14 =

02 Slave ID (device class) Unsigned 8 bit 60 =

03 S ta tus Unsigned 8 bit 255 = RUN, 0 = S TOP

04 Version number (release) Unsigned 8 bit 1…9

05 Version number (version) Unsigned 8 bit 1… 99

06 Version number (index) Unsigned 8 bit 1

22

AERSGARD® MODBUS

AERASGARD® /

AERASREG

®

HYGRASGARD® A FTM- ⁄ KF TM - LQ - CO2 - Modbus

G

General layout of bus struc ture

| Installation

MODBUS

RTU-Master

Rev. 2015 - 1.0 GB intro

Passive

branch

LA LA

Line
termination

Stub line

Slave 1 Slave 2

Bus topology with terminating and bias resist ors

Line
termination

Active

branch

MODBUS

RTU-Master

Trunk line

Stub line:

shorter 20m

A (D1) D+

B (D0) D–

RS-485

5 V

Slave n

Pull-up /
bias resistor

Pull-down /
bias resistor

Multiple branch n:

shorter 40m/n

Line
termination

Line
termination

Common

(GND)

Slave 1 Slave 2

Terminating resistor may only be installed at the ends of the bus line.
In networks w ith repeaters not more than two line terminations are allowed.
Line termination at the device can be activated via DIP switch 6.
The bias r esistors for bus level definition in the resting state are usually activated at the Modbus master / repeater.

The maximum number of subscribers per Modbus segment is 32 devices.
When the number of subscribers is greater, the bus must be subdivided into several segments separated by repeaters.
The subscriber address can be set from 1 to 247.

For the bus line, a twisted-pair cable data line / power supply line and copper mesh wire shield must be used.
Therefore, the line capacitance should be less than 100 pF / m (e.g. Profibus cable).

23

Mounting and Installation

G

Devices are to be connec ted under dead-volt age condition. Devices
must only be connec ted t o safety extra- low voltage. Consequential
damages caused by a fault in t his device are excluded f rom war
rant y or liability. Installation of these devices must only be realized
by authorized qualified personnel. The technical data and connect
ing conditions shown on the device labels and in the mounting
and operating instructions delivered together with the device are
exclusively valid. Deviations from the catalogue representation are
not explicitly mentioned and are possible in terms of technical pro
gress and continuous improvement of our produc ts. In case of any
modif ications made by t he user, all warr ant y claims are forfeited.
Operating this device close to other dev ices that do not comply with
EMC directives may inf luence functionality. This dev ice must not be
used for monitoring applications, which solely ser ve the purpose of
prot ect ing persons against hazards or injury, or as an EMERGENCY
STOP swit ch for systems or machinery, or for any other similar
safety-relevant purposes.

Dimensions of enclosures or enclosure accessories may show slight
tolerances on the specifications provided in these instructions.

Modif ications of these records are not permitted.
In case o f a complaint, only complete devices returned in original

packing will be accepted.

Notes regarding mechanical mounting and attachment:

Mounting shall take place while observing all relevant regulations

-

and standards applicable for the place of measurement
(e.g. such as welding instructions, etc.). Par ticularly the following

-

shall be regarded:
– VDE ⁄ VDI direct ive technical t emperature measur ements,

measurement set - up for temperature measurements.

– The EMC direc tives must be adhered t o.

­– It is imperative to avoid parallel laying of current-carr ying lines.

– We recommend t o use shielded cables with

the shielding being attached at one side to the DDC ⁄ PLC.

Before mounting, make sure that the exis ting thermometer‘s techni

cal par ameters comply wit h the actual conditions at the place of
utiliza tion, in par ticular in r espect of:

– Measuring range
– Permissible max imum pressure, flow velocity
– Installation length, tube dimensions
– Oscillations, vibrations, shocks are to be avoided (< 0.5 g)

Attention! In any case, please observe the mechanical and thermal
load limits of protective tubes according to DIN 43763 respect ively
according to specific S+S standards!

-

Important notes

G

Our “General Terms and Conditions for Business“ t ogether with the “General Conditions for the Supply of Products and Services of the Electrical and
Electronics Industry“ (ZVEI conditions) including supplementary clause “Extended Retention of Title“ apply as the exclusive terms and conditions.

In addition, the f ollowing points are to be observed:

– Devices must only be connect ed to safety extra-low voltage and under dead-voltage condition. To avoid damages and errors a t the device

(e.g. by volt age induction) shielded cables are to be used, laying parallel with current-carrying lines is to be avoided, and EMC directives ar e to
be observed.

– This device shall only be used for its intended purpose. Respective safety regulations issued by t he VDE, t he states, their control authorities,

the TÜ V and the local energy supply company must be observed. The purchaser has to adhere to the building and safety regulations and has t o
prevent perils of any kind.

– No warranties or liabilities will be assumed for defect s and damages arising from impr oper use of this device.

– Consequential damages caused by a fault in this device are excluded from warranty or liability.

– These devices must be installed by authorised specialists only.

The technical data and connecting c onditions of the mounting and operating instructions delivered together with the device are exclusively valid.

–

Deviations from the catalogue representation are not explicitly mentioned and are possible in terms of technical progress and continuous
improvement of our products.

– In case of any modifications made by the user, all warranty claims are forf eited.

– This device must not be installed close to heat sources (e.g. radiators) or be exposed to their hea t flow. Dir ect sun irradiation or heat

irradiation by similar sour ces (po werful lamps, halogen spotlights) must absolutely be avoided.

– Operating this device close to other devices that do not comply with EMC directives may influence functionality.

– This device must not be used for monitoring applications, which serve the purpose of prot ecting persons against hazards or injury,

or as an EMERGENC Y STOP switch for systems or machinery, or f or any other similar safety- relevant purposes.

– Dimensions of enclosures or enclosure accessories may show slight tolerances on the specifications provided in these instructions.

– Modifications of these records are not permitted.

– In case of a complaint, only complete devices returned in original packing will be accepted.

These instructions must be read befor e installation and putting in operation and all no tes provided therein ar e to be regarded!

24