Temperature Input Unit Display Modes - Omron GRT1 - 11-2007 Operation Manual

Temperature Input Units
GRT1-TS2P/TS2PK
GRT1-TS2T
6-4-2

Temperature Input Unit Display Modes

Normal Display Mode
(Default Setting)
180
If unused inputs are left disconnected, the Temperature Input Warning Flag in
the Warning Status Area and the Off-wire Detection Flag in the Alarm Status
will turn ON. If the Temperature Status Flag is used, the Off-wire Detection
Flag will turn ON. In addition, the ERR indicator will light. Here we will intro-
duce the method for connecting to the unused terminals.
• GRT1-TS2P: 50 to 150 Ω
• GRT1-TS2PK: 500 to 1,500 Ω
Do not set a B-type thermocouple for the GRT1-TS2T. An input error will be
detected if a B-type thermocouple is connected.
0A
3-wire sensor
0B
0B
SHT
0A
SHT
0B
NC
NC
0−
Short
0+
NC
NC
The input temperature data is converted to 4-digit hexadecimal digital data
and transmitted to the Master. If the conversion data is negative, the negative
value is expressed as the two's complement.
Two words are allocated in the Master, as shown in the following diagram. If
the input type's data has one decimal place, the value transmitted to the Mas-
ter is 10 times the actual value. (The decimal point is omitted.)
15 14 13 12
First word + 0
First word +1
Example 1: 100.0 ° C: 03E8 hex
Example 2: 350.0 ° C: 0DAC hex
1A
2-wire sensor
1B
1B
SHT
1A
SHT
1B
NC
NC
1−
1+
NC
NC
11 10 9 8 7 6 5 4
Input 0 temperature conversion data
Input 1 temperature conversion data
Section 6-4
0A 1A
0B 1B
0B 1B
SHT SHT
0A 1A
SHT SHT
0B 1B
NC NC
3 2 1 0 Bit