Omron SmartSlice GRT1 Series

180
Temperature Input Units Section 6-4
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.
GRT1-TS2P/TS2PK
GRT1-TS2T
6-4-2 Temperature Input Unit Display Modes
Normal Display Mode
(Default Setting)
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.)
Example 1: 100.0°C: 03E8 hex
Example 2: 350.0°C: 0DAC hex
3-wire sensor
SHT
0A
SHT
0B
NC
0A
0B
0B
NC
SHT
1A
SHT
1B
1A
1B
1B
SHT
0A
SHT
0B
NC
0A
0B
0B
NC
SHT
1A
SHT
1B
1A
1B
1B
2-wire sensor
NC
NC
NC
0−
0+
NC
NC
NC
1−
1+
Short
30214657810 9111214 1315
Input 0 temperature conversion data
Input 1 temperature conversion data
First word + 0
First word +1
Bit