Maple Systems OIT Family - Manual (Page 48)

NOTE: If you are using one of the following PLC communications drivers, you have the option
of selecting how the OIT interprets the word order when reading or writing to two
consecutive 16-bit PLC registers using Long format:
· Emerson Motion Control - Modbus
· Entertron Industries -- Modbus
· Industrial Control Links - Modbus
· Modbus Generic Network
· Modicon
· SAF Drives - Modbus
· Sixnet -- Modbus
To change the word order, from the Configuration Menu select Controller Settings and
then in the Long Format box select Low Word First or High Word First. When set to
High Word First, the default setting, the OIT regards the first PLC register as the most
significant word and the second PLC register as the least significant word. When set to
Low Word First the OIT considers the first PLC register as the least significant word
and the second PLC register as the most significant word.
4-Digit BCD
This format is used to represent a 16-bit register in the PLC as a BCD value with a range
of 0 to 9,999. If the value in the PLC register is not in BCD format, then the OIT displays
the value as hexadecimal.
Access: Read/Write, Read Only
Attributes: Number of Digits, Decimal Location, Commas, Leading Zeros, Hide Data
Entry, Left/Right Justification, Inc/Dec, Low/High Limits
8-Digit BCD
This format is used to represent a 32-bit register or two consecutive 16-bit registers in the
PLC as a BCD value with a range of 0 to 99,999,999. If the value in the PLC register is
not in BCD format, then the OIT displays the value as hexadecimal.
Access: Read/Write, Read Only
Attributes: Number of Digits, Decimal Location, Commas, Leading Zeros, Hide Data
Entry, Left/Right Justification, Inc/Dec, Low/High Limits
PLC Register Monitors 48
1010-0099, Rev. 07
2 3 4 6 5 7 8 MESSAGE ALARM RUN PRINT 1
Reg 2 (BCD): 5423 Reg 3 (BCD): 5542
Reg 2 (8-Digit BCD): 55425423
2 3 4 6 5 7 8 MESSAGE ALARM RUN PRINT 1
Output Status (4-Digit BCD): 4356