
25
Reg. 08
Reset & Trigger Control
Byte 9 8
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Write RSTB RSTA TLVL TIMP BTBD BTBM BTAD BTAM ATBD ATBM ATAD ATAM
Read RSTB RSTA TLVL TIMP BTBD BTBM BTAD BTAM ATBD ATBM ATAD ATAM
RSTB Reset M-module B (0 = normal, 1 = reset)
1
RSTA Reset M-module A (0 = normal, 1 = reset)
1
TLVL External Trigger Input Threshold Level (0 = +2.5V, 1 = +1.4V)
TIMP External Trigger Input Impedance (0 = high (>100K), 1 = 50)
BTBD Module B Trigger B Direction (0 = input, 1 = output)
2
BTBM Module B Trigger B Mode
0 0 Disabled
0 1 to/from External Trigger
1 0 to/from Module A Trigger A
1 1 to/from Module A Trigger B
BTAD Module B Trigger A Direction (0 = input, 1 = output)
2
BTAM Module B Trigger A Mode
0 0 Disabled
0 1 to/from External Trigger
1 0 to/from Module A Trigger A
1 1 to/from Module A Trigger B
ATBD Module A Trigger B Direction (0 = input, 1 = output)
2
ATBM Module A Trigger B Mode
0 0 Disabled
0 1 to/from External Trigger
1 0 to/from Module B Trigger A
1 1 to/from Module B Trigger B
ATAD Module A Trigger A Direction (0 = input, 1 = output)
2
ATAM Module A Trigger A Mode
0 0 Disabled
0 1 to/from External Trigger
1 0 to/from Module B Trigger A
1 1 to/from Module B Trigger B
Notes:
1. This bit must be cleared by user software to return the M-module to normal operation. The reset bit
need only be set to a 1 for a minimum of 1s to properly reset an M-module.
2. The direction is with respect to the M-module specified. For intermodule triggers, the M-module
trigger directions must be set opposite one another for proper operation.
Reg. 0A
Fan Control & Temperature Status
Byte B A
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Write VARF - - - Read Only
Read VARF 0 0 0 TEMP
VARF Variable Speed Fan (0 = variable, 1 = full ON)
TEMP Enclosure Temperature (°C = (TEMP – 281) / 4.6)
Figure 7. EM405D Registers (continued)
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