Owner's Manual

GDX-350 Sensor Transmitter
46 P/N: 5600-9001 Rev 2
3 16-bit status words; bit assignment for each channel. See below.
ALARM1_BELOW BIT0
ALARM2_BELOW BIT1
ALARM3_BELOW BIT2
ALARM1_LATCH BIT3
ALARM2_LATCH BIT4
ALARM3_LATCH BIT5
ALARM3_ACTIVE BIT6
CHANNEL_DISABLED BIT7
CHANNEL_CAL BIT8
CHANNEL_LINEARIZE BIT9
FAULT_RELAY_LATCH BIT10
DISPLAY_NEGATIVE BIT11
TRANSMIT SENSOR LIFE ENABLED BIT12
4 16-bit status word; bit assignment for system status. See below.
CH1_ALM1 BIT0
CH1_ALM2 BIT1
CH1_FAULT BIT2
CH2_ALAM1 BIT4
CH2_ALM2 BIT5
CH2_FAULT BIT6
K1_STATUS BIT8
K2_STATUS BIT9
K3_STATUS BIT10
5 16-bit status word; bit assignment for system status. See below.
CHAN_1_ACTIVE BIT0
CHAN_2_ACTIVE BIT1
SECURE_LEVEL BIT2
MARKER Tx LED BIT3
K1_FAILSAFE BIT12
K2_FAILSAFE BIT13
K2_ACK BIT14
LOCK BIT15
6 16-bit signed integer ranging from –1 to 100 where -1 indicates Cal Required.
7 16-bit integer ranging from 1 to 4095 scaled for –55 to +125 degrees C.
Memory Floating Point
VARIABLE ALIAS READ FUNCTION CODE WRITE FUNCTION CODE
FP Value Chan 1 33001 4 NA
FP Value Chan 2 33002 4 NA
NOTE: Returned as 15-bit plus sign 2’s complement with ±5% over/underrange applied. Consider
over/underrange when scaling values to be displayed at the workstation. The following equation
may be used to determine a value for display.
Display Value =
MODBUS Value [ (Span Value -Zero Value) 1.1]
32767
+ {Zero Value - [(Span Value - Zero Value) .05]}