140 CPU 651 50 Specifications
Original instructions
About us
General Specifications
Element
Description
Communication ports
1 Modbus (RS-232/RS-485)
1 Modbus Plus (RS-485)
1 USB
1 Ethernet
Bus current required
2160 mA
Max. number of communication modules supported at a time:
NOTE: This includes any module combination of: NOM, NOC, NOE, PTQ PDP MV1 and MMS
6 including:
  • up to 6 Quantum EIO distributed I/O modules 140 NOC 780 00
  • up to 2 Quantum EIO control head modules in the following configurations only:
    • two 140 NOC 781 00 modules
      – or –
    • two 140 NOC 781 00.2 modules
      – or –
    • one 140 NOC 781 00 module and one 140 NOC 781 00.2 module
    NOTE: You can enable IP forwarding in only one of the control head modules.
Key switch
Yes
Key pad
Yes
Processor
Function
Description
Model
Pentium
Clock speed
166 MHz
Coprocessor
Yes, built-in Ethernet
Watchdog timer
250 ms software adjustable
Memory
Internal user memory (available)
768 kByte without PCMCIA card
512 kByte with PCMCIA card
Additional memory (with PCMCIA card)
7168 kByte
NOTE: Not all of the Internal memory is available for the user program due to memory overhead, such as user, system, configuration, diagnostic data, etc. For more information see Memory usage.
Program Execution Time
Kilo Instruction executed per millisecond (Kins/ms)
Execution time per instruction (ms/Kins)
100% Boolean
65% Boolean + 35% digital
100% Boolean
65% Boolean + 35% digital
10.28
9.91
0.097
0.101
NOTE: When considering the execution time with the RAM or the PCMCIA card, the values are identical as the program execution takes place within the CACHE memory.
Reference Capacity
Discretes
65528 kByte max.
Registers
64976 kByte max.
Local I/O
Max. I/O words
1024 bits/module with no limit on total Local I/O words
S908 Remote I/O
Max. I/O words/drop
64 in / 64 out*
Max. number of remote drops
31 
*
This information can be a mix of discrete or register I/O. For each word of configured I/O, one of the I/O words must be subtracted from the total available.
NOTE: The 140 CPU 651 50 is not able to handle the mix of S908 remote I/O and Ethernet remote I/O architectures.
Ethernet Remote I/O
Max. I/O words/drop
400 in + 400 out
Max. number of remote drops
31 including:
  • up to 31 Quantum drops (140 CRA 312 00)
  • up to 16 X80 drops (BMX CRA 312 •0)
Max. number of I/O per Quantum drop
No limit
Max. number of I/O per X80 drop (BMX CRA 312 00)
up to 16 analog I/O
up to 128 discrete I/O
Max. number of I/O per X80 drop (BMX CRA 312 10)
up to 184 analog I/O
up to 1024 discrete I/O
NOTE: The 140 CPU 651 50 is not able to handle the mix of S908 remote I/O and Ethernet remote I/O architectures.
NOTE: Adding a complete Ethernet remote I/O drop online while PLC is in RUN is not supported by the 140 CPU 651 50.
Distributed I/O
Number of networks per system
1 (3**)
Max. words per network
500 in / 500 out
For every DIO drop, there is a minimum of two words input of overhead
Max. words per Node
30 in / 32 out
Max. number of DIO Drops per Network
64 
**
Requires the use of the 140 NOM 21• 00 option module.
Change Configuration On The Fly (CCOTF)
Supported
Battery and Clock
Type
3 V lithium
Service Life
1200 mAh
Shelf life
10 years with 0.5% loss of capacity/year
Battery load current @ power-off
typical: 14 μA @ 25 °C (ambient temperature)
maximum: 420 μA @ 60 °C
TOD clock
+/-8.0 seconds/day @ 0...60 °C
Diagnostics
Power-up
RAM
RAM address
Executive Checksum
User Logic Check
Processor
Run Time
RAM
RAM address
Executive Checksum
User Logic Check