Ormec SMLC 160, Руководство по установке и эксплуатации, Страница: 25 / 66

ServoWire Motion & Logic Controller Manual SMLC System Components
J20 – Development Serial Port COM1 ‐ RS232
SMLC programming, system development, and system monitoring are accomplished by using an IBM ‐ PC
or compatible PC attached to the RS ‐ 232 Development Serial Port connector (J20), which is located on
the front of the SMLC. The Development Serial Port is an asynchronous RS ‐ 232 device. It is handled
internally by a 16C550 compatible serial communications controller, and interfaced through a DB9
connector. Connection between the development computer and SMLC Development Serial Port can be
made while power is applied to the SMLC.
ORMEC can provide a coil ‐ cord style communication cable (part number CBL ‐ CDS ‐ SER/10) for the
Development Serial Port which are compatible with an IBM PC (DB9) style serial connector.
Figure 9, RS ‐ 232 Serial Port Connector (J20, J21, J22, and J23) Pin ‐ out
Pin Signal Description
1 DCD Data Carrier Detect. This signal indicates that the modem or data set has
detected the data carrier.
2 RxD Serial input. This signal receives serial data from the communication link.
3 TxD Serial output. This signal sends serial data to the communication link. The
signal is set to a marking state on hardware reset when the transmitter is
empty or when loop mode operation is initiated.
4 DTR Data Terminal Ready. This signal indicates to the modem or data set that
the on ‐ board UART is ready to establish a communication link.
5 GND Ground
6 DSR Data Set Ready. This signal indicates that the modem or data set is ready to
establish a communication link.
7 RTS Request To Send. This signal indicates to the modem or data set that the
on ‐ board UART is ready to exchange data.
8 CTS Clear To Send. This signal indicates that the modem or data set is ready to
exchange data.
9 RI Ring Indicator. This signal indicates that the modem has received a
telephone ring signal.
Table 9, RS ‐ 232 Serial Port Connector (J20, J21, J22, and J23) pin ‐ out.
J21 – SMLC HMI Serial Port COM2 ‐ RS232
The SMLC HMI serial port J21 uses a DB9 connector that provides access to asynchronous serial 232
communications. This port is commonly used to interface to the ORMEC HMI flat ‐ panel touch ‐ screen,
but any serial MODBUS protocol master device can be used. It can alternately be used for general
purpose serial communications with terminals, computers or programmable controllers by using the
CoDeSys Library SysLibCom.lib.
Connections to the SMLC HMI Serial Port are made through connector J21, which is located on the lower
left side of the SMLC. The pin ‐ out of the SMLC HMI Serial Port is shown in Figure 10, RS ‐ 232 Serial Port
Connector (J20, J21, J22, and J23) Pin ‐ out.
J22 – SMLC User Serial Ports COM3 ‐ RS232
J23 – SMLC User Serial Ports COM4 ‐ RS232 (SMLC ‐ 160 only)
SMLC ‐ 004a 17