100/180MM DISTRIBUTED GRAPHIC RECORDER: USER GUIDE
Page 125
HA029324
Issue 11 Oct 14
MODBUS ADDRESSING
The following table gives hex addresses for maths channel 1. Generally: Maths channel N parameter
address = maths channel 1 parameter a 162 (N-1) (decimal). For full details of the Modbus TCP
implementation, see
section 8
.
Please see the
notes
at the end of this section (4.3.11).
MATHS CHANNEL CONFIGURATION DATA
CHANNEL 1
4.3.11 MATHS OPTION (Cont.)
Ch1 Span high
Upper span value (display full scale)
Scaled
Read only
2FF1 (12273)
1
Ch1 Span low
Lower span value (display ‘zero’)
Scaled
Read only
2FF2 (12274)
1
Ch1 Zone high
Zone high value (two decimal places)
Scaled
Read only
2FF3 (12275)
1
Ch1 Zone low
Zone low value (two decimal places)
Scaled
Read only
2FF4 (12276)
1
Ch1 PV type
Input type
Enum
Read only
2FF5 (12277)
1
1 = Analogue input
3 = Totaliser
2 = Maths
4 = Counter
Ch1 Decimal places
Number of decimal places (0 to 9)
Uint16
Read only
2FF6 (12278)
1
(used by all scaled parameters except where stated)
Ch1 Colour
Channel colour (0 to 55) (See
Annex B
for defi nitions)
Enum
Read only
2FF7 (12279)
1
Ch1 Units
Units string (up to fi ve characters)
String_5
Read only
2FF8 (12280)
3
Spare
2FFB
(12283)
2
Ch1 Open string
Open Digital Input string (up to eight characters)
String_8
Read only
2FFD (12285)
4
Spare
3001
(12289)
4
Ch1 Close string
Closed Digital Input string (up to eight characters)
String_8
Read only
3005 (12293)
4
Spare
3009
(12297)
4
Ch1 Descriptor
Channel descriptor (up to 20 characters)
String_20
Read only
300D (12301)
10
Spare
3017
(12311)
10
Ch1 No of alarms
Number of alarms on this channel
Uint16
Read only
3021 (12321)
1
Ch1 PV format
Enum
Read only
3022 (12322)
1
0 = Numeric
1 = Digital strings
Spare
3023
(12323)
60
Ch1 Alarm 1 enable
Alarm 1 enable
Enum
Read only
305F (12383)
1
0 = Off
2 = Latched
1 = Unlatched
3 = Trigger
Ch1 Alarm 1 type
Alarm 1 type
Enum
Read only
3060 (12384)
1
0 = Absolute low
1 = Absolute high
2 = Deviation in
3 = Deviation out
4 = Rate of change rise
5 = Rate of change fall
Ch1 Alarm 1 setpoint
Trigger setpoint (see note)
Scaled
Read/Write 3061 (12385)
1
Spare
3062
(12386)
10
Ch1 Alarm 2 enable
Alarm 2 enable (As alarm 1 enable above)
Enum
Read only
306C (12396)
1
Ch1 Alarm 2 type
Alarm 2 type (As alarm 1 type above)
Enum
Read only
306D (12397)
1
Ch1 Alarm 2 setpoint
Trigger setpoint (see note)
Scaled
Read/Write 306E (12398)
1
Spare
306F
(12399)
10
Ch1 Alarm 3 enable
Alarm 3 enable (As alarm 1 enable above)
Enum
Read only
3079 (12409)
1
Ch1 Alarm 3 type
Alarm 3 type (As alarm 1 type above)
Enum
Read only
307A (12410)
1
Ch1 Alarm 3 setpoint
Trigger setpoint (see note)
Scaled
Read/Write 307B (12411)
1
Spare
307C
(12412)
10
Ch1 Alarm 4 enable
Alarm 4 enable (As alarm 1 enable above)
Enum
Read only
3086 (12422)
1
Ch1 Alarm 4 type
Alarm 4 type (As alarm 1 type above)
Enum
Read only
3087 (12423)
1
Ch1 Alarm 4 setpoint
Trigger setpoint (see note)
Scaled
Read/Write 3088 (12424)
1
Spare
3089
(12425)
10
Parameter name
Description
Type
Access
Start Addr
Hex (Dec)
Register
Length
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