Serial Port Connections

Transcription

1 Serial Port Connections PORT 5 RS PORT RS45 Providing Power to an External Device from Port If either port is set up for communications with a serial device that requires 00mA or less at 5VDC, the device can obtain power from Port. Cable Lengths and Baud Rates Maximum cable lengths (the total number of feet from the CPU to the last device attached to the cable) are: Port (RS-) = 5 meters (50 ft.) Port (RS-45) = 00 meters (4000 ft.) Both ports support configurable baud rates, as listed in the CPU descriptions in this manual. The following pre-assembled cables are available: IC00CBL00 IC00CBL00 CPU Programming Cable RS Expansion Firmware Upgrade Cable 4- VersaMax PLC User's Manual March 00 GFK-50C

2 Port : RS- Pin Assignments for Port Port is an RS- port with a 9-pin female D-sub connector. It is used as the boot loader port for upgrading the CPU firmware. The pinout of Port allows a simple straight-through cable to connect with a standard AT-style RS- port. Cable shielding attaches to the shell. Pin Signal Direction Function n/c TXD Output Transmit Data output RXD Input Receive Data input 4 n/c 5 GND 0V/GND signal reference 6 n/c 7 CTS Input Clear to Send input RTS Output Request to Send output 9 n/c Shell SHLD Cable Shield wire connection / 00% (Continuous) shielding cable shield connection RS- Point to Point Connection In point-to-point configuration, two devices are connected to the same communication line. For RS-, the maximum length is 5 meters (50ft) PC 9-Pin CPU Serial Port Port 9-pin female 9-pin male () RXD () TXD () TXD () RXD (5) GND (5) GND (7) RTS (7) CTS () CTS () RTS The shield must connect to shell of connectors on both ends of the cable. GFK-50C Chapter 4 Installation 4-

3 and Cable Specifications for Port Vendor Part numbers below are provided for reference only. Any part that meets the same specification can be used. Cable: Belden Pin Male : Shell: Computer cable, overall braid over foil shield 5 conductor 0 Volt / 0 C (76 F) 4 AWG tinned copper, 7x stranding Type: Crimp Solder Vendor: Plug: DEA9PK7F ZDE9P Pin: Kit * ITT Cannon DE07-54 [9-pin size backshell kit]: Metal-Plated Plastic (Plastic with Nickel over Copper) Cable Grounding Clamp (included) 40 cable exit design to maintain low-profile installation Plus ITT Cannon [Extended Jackscrew]: Threaded with #4-40 for secure attachment to CPU00 port Order Qty for each cable shell ordered Critical Information any other part selected should meet or exceed this criteria. * Use of this kit maintains the 70mm installed depth. 4-4 VersaMax PLC User's Manual March 00 GFK-50C

4 Port : RS-45 Pin Assignments for Port Port is an RS-45 port with a 5-pin female D-sub connector. This can be attached directly to an RS-45 to RS- adapter. Pin Signal Direction Function SHLD Cable Shield Drain wire connection,, 4 n/c 5 P5V Output +5.VDC to power external devices (00mA max.) 6 RTSA Output Request to Send (A) output 7 GND 0V/GND reference signal CTSB Input Clear to Send (B) input 9 RT Resistor Termination (0 ohm) for RDA 0 RDA Input Receive Data (A) input RDB Input Receive Data (B) input SDA Output Transmit Data (A) output SDB Output Transmit Data (B) output 4 RTSB Output Request to Send (B) output 5 CTSA Input Clear to Send (A) input Shell SHLD Cable Shield wire connection / 00% (Continuous ) shielding cable shield connection and Cable Specifications for Port Vendor Part numbers below are provided for reference only. Any part that meets the same specification can be used. Cable: Belden 05 5 Pin Male : Shell: Low Capacitance Computer cable, overall braid over foil shield 5 Twisted-pairs Shield Drain Wire 0 Volt / 0 C (76 F) 4 AWG tinned copper, 7x stranding Velocity of Propagation = 7% Nominal Impedance = 00Ω Type: Crimp Solder Vendor: Plug: DAA5PK7F ZDA5P Pin: Kit* ITT Cannon DA07-50 [5-pin size backshell kit]: Metal-Plated Plastic (Plastic with Nickel over Copper) Cable Grounding Clamp (included) 40 cable exit design to maintain low-profile installation Plus ITT Cannon [Extended Jackscrew]: Threaded with (metric) Mx0.5 for secure attachment Order Qty for each cable shell ordered Critical Information any other part selected should meet or exceed this criteria. GFK-50C Chapter 4 Installation 4-5

5 RS-45 Point to Point Connection with Handshaking In point-to-point configuration, two devices are connected to the same communication line. For RS-45, the maximum cable length is 00 meters (4000 feet). Modems can be used for longer distances. Computer RD ( A' ) RD ( B' ) SD ( A ) SD ( B ) CTS ( A' ) CTS ( B' ) RTS ( B ') RTS ( A ) GND SHLD Shielded Twisted Pairs Up to 5. meters (50 ft) without isolation PLC SD ( A ) SD ( B ) RD ( A' ) RD ( B ' ) RT RTS ( A ) RTS ( B ) CTS ( B' ) CTS ( A' ) GND SHLD 4-6 VersaMax PLC User's Manual March 00 GFK-50C

6 RS-45 Multidrop Serial Connections In the multidrop configuration, the host device is configured as the master and one or more PLCs are configured as slaves. The maximum distance between the master and any slave may not exceed 4000 feet (00 meters). This figure assumes good quality cables and a moderately noisy environment. A maximum of slaves can be connected using RS-45 in a daisy chain or multidrop configuration. The RS-45 line must include handshaking and use wire type as specified earlier. Master Slave Station Last Station When wiring RS-45 multidrop cables, reflections on the transmission line can be reduced by daisy-chaining the cable as shown below. Make connections inside the connector to be attached to the PLC. Avoid using terminal strips to other types of connectors along the length of the transmission line. Computer RS- Port 9 Pin Male RD TD RTS 7 CTS DCD DTR 4 GND 5 9-Pin Female to 5- Pin Male RS- Shielded Cable (NC) RD TD 5 CTS 0 DTR DCD 7 GND SHLD RS-/RS-45 Converter IC690ACC900 DCD(A) DCD(B) RD(A ) 0 RD(B ) SD(A) SD(B) RT 9 CTS(A ) 5 CTS(B ) RTS(A) 6 RTS(B) 4 +5V 5 0V 7 SHLD RS-45 Cables Make connections inside D-connectors SD(A) SD(B) 0 RD(A ) RD(B ) 9 RT 6 RTS(A) 4 RTS(B) 5 CTS(A ) CTS(B ) 5 +5V 7 0V SHLD CPU RS-45 Port 5 Pin Female 5-5- FEMALE FEMALE RS- RS-45 PORT PORT Power Source for Converter. Must be wired no less than meters (0 feet) from the converter. 5- MALE 5V 0V TO OTHER PLC's Termination resistance for the Receive Data (RD) signal must be connected only on units at the ends of lines. This termination is made at the CPU by connecting a jumper between pin 9 and pin 0 inside the D-shell connector. Ground Potential: Multiple units not connected to the same power source must have common ground potential or ground isolation for proper operation of the system. GFK-50C Chapter 4 Installation 4-7