CCF 10 - Coupling of External Systems

Features:

• Data exchange with external systems via Modbus RTU protocol (master).
• Supported function codes: FC 1, FC 2, FC 3, FC 4, FC 5, FC 6, FC 15, FC 16, and FC 8.
• Hardware interfaces (optional): RS 422, RS 485, RS 232, TTY.
• Baud rates: 300, 600, 1200, 2400, 4800, 9600, 19200.
• Number of inputs: 230 (buffer addresses: 0 ... 229).
• Number of outputs: 90 (buffer addresses: 700 ... 789).

Technical Data:

RS 422 / RS 485:

• Interface design: EIA-Standard RS 485.
• Signal input level (differential voltage between RA/RB):
  • UEss > 200 mV.
• Common-mode voltage:
  • UCom = -7 ... +12 V.
• Input resistance:
  • RE = 12 kOhm.
• Signal output level (differential voltage between TA/TB, CA/CB):
  • UASS = 1.5 V ... 5 V; 2.5 V typical.
• Signal output current:
  • IA > 60 mA (short-circuit proof and overload-proof).
• Load resistance:
  • RA > 54 Ohm.
• Short-circuit current:
  • IK < 250 mA.
• Transmission medium:
  • 2-pair twisted, shielded cable.
• Bus length at 9.6 kBd:
  • < 1000 m.
• VP voltage for connection to draw resistors:
  • • 5 V / 10 mA (decoupled and short-circuit-proof).
• Operation of RS 422 port:
  • Half-duplex.

RS 232C:

• Interface design: DIN 66 020 / V.24 / EIA standard RS 232C.
• Signal input level against GND:
  • UE (pos.) = + 3 ... + 15 V; UE (neg.) = - 3 ... -15 V.
• Signal input current:
  • IE = 0.75 ... 3.75 mA.
• Input resistance:
  • RE = 6.8 kOhm.
• Input capacity:
  • CE < 0.1 nF.
• Signal output level (with 12 V supply):
  • UA (pos.) = + 9 V typ. (+6 V ... +12 V); UA (neg.) = -9 V typ. (-6 V ... -12 V).
• Signal output current:
  • |IA| < 3 mA (short-circuit proof and overload-proof).
• No-load voltage:
  • |UA| < 12 V.
• Short-circuit current:
  • IK < 25 mA.
• Load resistance:
  • RA = 3 kOhm ... 7 kOhm.
• Load capacity:
  • CA < 2.5 nF.
• Transmission medium:
  • 2-pair twisted, shielded cable.
• Distance at 9.6 kBd:
  • < 50 m.

TTY / 20 mA:

• Constant current source.
• No-load voltage:
  • IK1 = 20 mA.
  • < 24 V.
• Signal input level (receive loop):
  • 1-signal: IE(1) = 12 ... 30 mA; 0-signal: IE(0) = 0 ... 3 mA.
• Voltage drop:
  • UE < 3 V.
• Signal output level (transmit loop):
  • 1-signal: IA(1) = IK (20 mA ±15%); 0-signal: IA(0) < 2 mA.
• Voltage drop on transmit transistor:
  • UA < 2.7 V.
• No-load voltage of internal current source:
  • < 24 V.
• Distance at 9.6 kBd.