Memory Map Data Formats - GE 489 Instruction Manual

6.3 MEMORY MAP
Table 6–2: DATA FORMATS (Sheet 1 of 5)
FORMAT TYPE
CODE
F1 16 bits
F2 16 bits
F3 16 bits
F4 16 bits
F5 16 bits
F6 16 bits
F10 32 bits
F12 32 bits
F13 32 bits
F14 32 bits
F15 16 bits
F16 16 bits
6
F18 32 bits
F19 32 bits
F22 16 bits
F24 32 bits
F50 16 bits
F100 Unsigned
16 bit integer
F101 Unsigned
16 bit integer
F102 Unsigned
16 bit integer
F103 Unsigned
16 bit integer
F104 Unsigned
16 bit integer
F105 Unsigned
16 bit integer
6-40
DEFINITION
Unsigned Value
Example: 1234 stored as 1234
Unsigned Value, 1 Decimal Place
Example: 123.4 stored as 1234
Unsigned Value, 2 Decimal Places
Example: 12.34 stored as 1234
2's Complement Signed Value
Example, –1234 stored as –1234 (i.e., 64302)
2's Complement Signed Value, 1 Decimal Place
Example, –1.234 stored as –1234 (i.e., 64302)
2's Complement Signed Value, 2 Decimal Places
Example, –12.34 stored as –1234 (i.e., 64302)
2's Complement Signed Long Value, 1 Decimal Place
1st 16 bits: High order word of long value
2nd 16 bits: Low order word of long value
Example: –12345.6 stored as –123456 (i.e., 1st word FFFE hex, 2nd word 1DC0 hex)
2's Complement Signed Long Value
1st 16 bits: High order word of long value
2nd 16 bits: Low order word of long value
Example: –123456 stored as 1st word FFFE hex, 2nd word 1DC0 hex
2's Compliment Signed Long Value, 3 Decimal Places
1st 16 bits: High order word of long value
2nd 16 bits: Low order word of long value
Example: –123.456 stored as -123456 (i.e., 1st word FFFE hex, 2nd word 1DC0 hex)
2's Complement Signed Long Value, 2 Decimal Places
1st 16 bits: High order word of long value
2nd 16 bits: Low order word of long value
Example: –1234.56 stored as –123456 (i.e., 1st word FFFE hex, 2nd word 1DC0 hex)
Hardware Revision
1 = revision A, 2 = revision B, 3 = revision C,..., 26 = revision Z
Software Revision
1111 1111 XXXX XXXX: Major revision number – 0 to 9 in steps of 1
XXXX XXXX 1111 1111: Minor revision number (two BCD digits) 00 to 99 in steps of 1
Example: Revision 2.30 stored as 0230 hex
Date (MM/DD/YYYY)
1st byte: Month (1 to 12)
2nd byte: Day (1 to 31)
3rd and 4th byte: Year (1996 to 2094)
Example: Feb. 20, 1996 stored as 34867148 (i.e., first word 0214, 2nd word 07CC)
Time (HH:MM:SS:hh)
1st byte: Hours (0 to 23)
2nd byte: Minutes (0 to 59)
3rd byte: Seconds (0 to 59)
4th byte: Hundredths of seconds (0 to 99)
Example: 2:05pm stored as 235208704 (i.e., 1st word 0E05, 2nd word 0000)
Character String (Note: Range indicates number of characters)
1st byte (MSB) of each word: First of a pair of characters
2nd byte (LSB) of each word: Second of a pair of characters
Example: String "AB" stored as 4142 hex
Time Format for Broadcast
1st byte: Hours (0 to 23)
2nd byte: Minutes (0 to 59)
3rd and 4th bytes: Milliseconds (0 to 59999). Note: Clock resolution limited to 1/100 sec.
Example: 1:15:48:572 stored as 17808828 (i.e., 1st word 010F, 2nd word BDBC)
Relay List (Bitmap)
Bit 0 = Relay 1, Bit 1 =Relay 2, Bit 2 = Relay 3, Bit 3 = Relay 4, Bit 4 = Relay 5, Bit 5 = Relay 6
Temperature display units
0 = Celsius, 1 = Fahrenheit
RS485 baud rate
0 = 300, 1 = 1200, 2 = 2400, 3 = 4800, 4 = 9600, 5 = 19200
RS485 parity
0 = None, 1 = Odd, 2 = Even
No / Yes selection
0 = No, 1 = Yes
Ground CT type
0 = None, 1 = 1 A Secondary, 2 = 50:0.025 Ground CT, 3 = 5 A Secondary
Off / On selection
0 = Off, 1 = On
489 Generator Management Relay
6 COMMUNICATIONS

6.3.8 MEMORY MAP DATA FORMATS

GE Power Management