Automationdirect.com Productivity 2000 P2-SCM Podręcznik - Strona 6
Przeglądaj online lub pobierz pdf Podręcznik dla Jednostka sterująca Automationdirect.com Productivity 2000 P2-SCM. Automationdirect.com Productivity 2000 P2-SCM 8 stron. Serial communications
Drukuj stronę
6
www.productivity2000.com
Port 4 (RS-485 Configuration)
Port Type
RS-485
Non-isolated RS-485 port connects the CPU as a
Modbus/ASCII master or slave to a peripheral device.
Description
Includes ESD/EFT protection and automatic echo
cancellation when transmitter is active.
Data Rates
Selectable, 1200, 2400, 9600, 19200, 33600, 38400
TXD+/RXD+
RS-485 transceiver high
TXD-/RXD-
RS-485 transceiver low
GND
Logic Ground
Input Impedance
19kΩ
Maximum Load
50 transceivers, 19kΩ each, 60Ω termination
Output Short Circuit
±250mA, thermal shut-down protection
Protection
Electrostatic Discharge
±8kV per IEC1000-4-2
Protection
Electrical Fast Transient
±2kV per IEC1000-4-4
Protection
Minimum Differential
1.5 V with 60Ω load
Output Voltage
Fail Safe Inputs
Logic high input state if inputs are unconnected
Maximum Common Mode
-7.5 V to 12.5 V
Voltage
Port Status LED
RED LED Illuminated when active for TXD and RXD
Cable Options
Recommend L19827-XXX from AutomationDirect.com
G
-
+
T
RS-485
Pin #
Signal
G
GND
–
TXD-/RXD-
+
TXD+/RXD+
T
TERMINATION
Tech Support 770-844-4200