Model S4000CH
45
6.8.11 Serial Number (0Bh/0Ch)
The serial number is a 32-bit word but the value is only 23 bits long. The upper bits are
always zero. This is done to keep the same serial number as the HART serial number.
Address 0x0C contains the lower part of the number and address 0X0B contains the upper
part.
6.8.12 Alarm Settings (0Dh)
If an alarm exists a write is not allowed and a device exception code is returned.
A read returns the present Alarm settings of the S4000CH. A write command changes the
settings to the requested values. The set points are programmable in 5% FS steps.
NOTE:
The maximum alarm setting for the S4000CH is 60% LEL.
A 1 in the 9
th
bit position means the output is Latching, a 0 means it is Non-Latching. A 1 in
the 8
th
bit position means the output is normally Energized a 0 means it is normally De-
Energized. The Alarm set point cannot be set below the Warn set point.
Factory default is
60% FS, Latching, De-Energized
.
Exception: Returns an Exception Code 01 (Illegal Function) if an illegal write is requested.
Byte
Function
Bit Position
Access
High
Not Used
15 MSB
Read
Not
Used
14
Read
Not
Used
13
Read
Not
Used
12
Read
Not
Used
11
Read
Not
Used
10
Read
Latching/Non-
Latching
9 R/W
Energized/De-
Energized
8 R/W
Low
Set point
(7-0)
R/W
6.8.13 Warn Settings (0Eh)
A read returns the present Warn settings of the S4000CH. A write command changes the
settings to the requested values. The set points are programmable in 5% FS steps.
NOTE:
The maximum warn setting for the S4000CH is 60% LEL.
A 1 in the 9
th
bit position means the output is Latching, a 0 means it is Non-Latching. A 1 in
the 8
th
bit position means the output is normally Energized, a 0 means it is normally De-
Energized. The Warn set point cannot be set above the Alarm set point.
Factory default is
30% FS, non-latching, de-energized.
Содержание S4000CH
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