Word/Bit Addresses: (6-4-1, p103): 2 bytes: address of word or flag. 1 byte: bit between 00-0F (0-15). 00 for word or flag data.... address of area + offset in BCD & bit ....
Used to control I/O points, other bits, timers, and counters, and to temporarily store data.
Special Relay (SR)
Words: 236 to 255. Bits: 23600 to 25507
Words: 18 (bits 08 to 15) and 19 (bits 00 to 07)
Contains system clocks, flags, control bits, and status information.
Auxiliary Relay (AR)
Words: AR 00 to AR 27. Bits: AR 00 to AR 2715
Contains flags and bits for special functions. Retains status during power failure.
Data Memory DM Read/write: DM 0000 to DM 0999
Read only: DM 1000 to DM 1999
Used for internal data storage and manipulation.
Holding Relay HR
Words: HR 00 to HR 99. Bits: HR 0000 to HR 9915
Words: HR0 to HR 9, bits: HR00 to HR915
Used to store data and to retain the data values when the power to the PC is turned off.
Timer/Counter (TC)
TC 000 to TC 511 (TC numbers used to access other information)
TC 00 to TC99
Used to define timers and counters, and to access completion flags, PV, and SV. In general, when used as a bit operand, a TC number accesses the completion flag for the timer or counter defined using the TC number. When used as a word operand, the TC number accesses the present value of the timer or counter.
Link Relay (LR)
Words: LR 00 to LR 63 Bits: LR 0000 to 6315
Available for use as work bits.
Temporary Relay (TR)
TR 00 to TR 07 (bits only)
TR00 to TR07 (bits only)
Used to temporarily store and retrieve execution conditions. These bits can only be used in the Load and Output instructions. Storing and retrieving execution conditions is necessary when programming certain types of branching ladder diagrams.
when relative motion exists between a conductor and a magnetic field, a voltage appears across the conductor and if the circuit is completed, a current is generated.
convention: rotate turbine CCW ? to give a nice sine wave?
Word/Bit Addresses: (6-4-1, p103): 2 bytes: address of word or flag. 1 byte: bit between 00-0F (0-15). 00 for word or flag data.... address of area + offset in BCD & bit ....
Used to control I/O points, other bits, timers, and counters, and to temporarily store data.
Special Relay (SR)
Words: 236 to 255. Bits: 23600 to 25507
Words: 18 (bits 08 to 15) and 19 (bits 00 to 07)
Contains system clocks, flags, control bits, and status information.
Auxiliary Relay (AR)
Words: AR 00 to AR 27. Bits: AR 00 to AR 2715
Contains flags and bits for special functions. Retains status during power failure.
Data Memory DM Read/write: DM 0000 to DM 0999
Read only: DM 1000 to DM 1999
Used for internal data storage and manipulation.
Holding Relay HR
Words: HR 00 to HR 99. Bits: HR 0000 to HR 9915
Words: HR0 to HR 9, bits: HR00 to HR915
Used to store data and to retain the data values when the power to the PC is turned off.
Timer/Counter (TC)
TC 000 to TC 511 (TC numbers used to access other information)
TC 00 to TC99
Used to define timers and counters, and to access completion flags, PV, and SV. In general, when used as a bit operand, a TC number accesses the completion flag for the timer or counter defined using the TC number. When used as a word operand, the TC number accesses the present value of the timer or counter.
Link Relay (LR)
Words: LR 00 to LR 63 Bits: LR 0000 to 6315
Available for use as work bits.
Temporary Relay (TR)
TR 00 to TR 07 (bits only)
TR00 to TR07 (bits only)
Used to temporarily store and retrieve execution conditions. These bits can only be used in the Load and Output instructions. Storing and retrieving execution conditions is necessary when programming certain types of branching ladder diagrams.
when relative motion exists between a conductor and a magnetic field, a voltage appears across the conductor and if the circuit is completed, a current is generated.
convention: rotate turbine CCW ? to give a nice sine wave?