HIEE401481R1控制卡件,ABB使用配置教程
同步（SDLC/HDLC）和異步協(xié)議。硬件支持110B/s至38.4KB/s的異步串行波特率和同步波特率高達(dá)2.5MB/s。每個(gè)端口也支持CT、DCD、RTS和DTR控制信號(hào)作為T(mén)xD和RxD發(fā)送/接收數(shù)據(jù)信號(hào)和TxC/RxC同步時(shí)鐘信號(hào)。因?yàn)椴⒎撬姓{(diào)制解調(diào)器控制線都可用在Z85230中，使用Z8536 CIO設(shè)備提供缺失的調(diào)制解調(diào)器線EIA-232-D連接EIA-232-D標(biāo)準(zhǔn)定義了此串行接口。接口采用不平衡（單端）信號(hào)，通常與DB-25連接器一起使用，但其他連接器樣式（例如，DB-9和RJ-45）有時(shí)用作好表B-1列出了標(biāo)準(zhǔn)EIA-232-D互連。
HIEE401481R1控制卡件并非所有引腳表中列出的是每種應(yīng)用中都需要的。要正確解釋信息，請(qǐng)記住EIA-232-D串行開(kāi)發(fā)了將終端連接到調(diào)制解調(diào)器的接口。串行數(shù)據(jù)將發(fā)送設(shè)備留在傳輸數(shù)據(jù)（TxD）線上，并到達(dá)接收數(shù)據(jù)（RxD）線上的接收設(shè)備。計(jì)算時(shí)設(shè)備在沒(méi)有調(diào)制解調(diào)器的情況下互連，其中一個(gè)單元必須配置為終端（數(shù)據(jù)終端設(shè)備：DTE），另一個(gè)配置為調(diào)制解調(diào)器（數(shù)據(jù)電路終端設(shè)備：DCE）。因?yàn)橛?jì)算機(jī)是通常配置為與終端一起工作，稱為配置在大多數(shù)情況下作為調(diào)制解調(diào)器。傳輸數(shù)據(jù)。待傳輸?shù)臄?shù)據(jù)；從終端輸入調(diào)制解調(diào)器。3 RxD接收數(shù)據(jù)。從接收線解調(diào)的數(shù)據(jù)；輸出自調(diào)制解調(diào)器到終端。
4發(fā)送RTS請(qǐng)求。當(dāng)需要傳輸數(shù)據(jù)時(shí)，從終端輸入調(diào)制解調(diào)器消息RTS關(guān)閉時(shí)，調(diào)制解調(diào)器載波保持關(guān)閉狀態(tài)。當(dāng)旋轉(zhuǎn)RTS時(shí)打開(kāi)時(shí)，調(diào)制解調(diào)器立即打開(kāi)載波。
5 CT清除發(fā)送。從調(diào)制解調(diào)器到終端的輸出，以指示該消息傳輸可以開(kāi)始。當(dāng)使用調(diào)制解調(diào)器時(shí)，電流互感器從關(guān)到開(kāi)延時(shí)后RTS的轉(zhuǎn)換。
6 DSR數(shù)據(jù)集就緒。從調(diào)制解調(diào)器到終端的輸出，指示調(diào)制解調(diào)器已準(zhǔn)備好發(fā)送或接收數(shù)據(jù)。
7 SG信號(hào)接地。調(diào)制解調(diào)器接口上所有信號(hào)的公共返回線。8 DCD數(shù)據(jù)載波檢測(cè)。從調(diào)制解調(diào)器到終端的輸出表明正在接收承運(yùn)人。9-14未使用。
15 TxC傳輸時(shí)鐘（DCE）。調(diào)制解調(diào)器到終端的輸出；時(shí)鐘數(shù)據(jù)來(lái)自將終端連接到調(diào)制解調(diào)器。16未使用。17 RxC接收時(shí)鐘。從終端到調(diào)制解調(diào)器的輸出；時(shí)鐘從終端到調(diào)制解調(diào)器。18、19未使用。20 DTR數(shù)據(jù)終端就緒。從終端輸入調(diào)制解調(diào)器；表明終端已準(zhǔn)備好發(fā)送或接收數(shù)據(jù)。
synchronous (SDLC/HDLC) and asynchronous protocols. The hardware
supports asynchronous serial baud rates of 110B/s to 38.4KB/s and
synchronous baud rates of up to 2.5MB/s.
Each port supports the CTS, DCD, RTS, and DTR control signals, as well
as the TxD and RxD transmit/receive data signals and TxC/RxC
synchronous clock signals. Since not all modem control lines are available
in the Z85230, a Z8536 CIO device is used to provide the missing modem
lines.
EIA-232-D Connections
The EIA-232-D standard defines the electrical and mechanical aspects of
this serial interface. The interface employs unbalanced (single-ended)
signaling and is generally used with DB-25 connectors, although other
connector styles (for example, DB-9 and RJ-45) are sometimes used as
well.
Table B-1 lists the standard EIA-232-D interconnections. Not all pins
listed in the table are necessary in every application.
To interpret the information correctly, remember that the EIA-232-D serial
interface was developed to connect a terminal to a modem. Serial data
leaves the sending device on a Transmit Data (TxD) line and arrives at the
receiving device on a Receive Data (RxD) line. When computing
equipment is interconnected without modems, one of the units must be
configured as a terminal (data terminal equipment: DTE) and the other as
a modem (data circuit-terminating equipment: DCE). Since computers are
normally configured to work with terminals, they are said to be configured
as a modem in most cases.Transmit Data. Data to be transmitted; input to modem from terminal.
3 RxD Receive Data. Data which is demodulated from the receive line; output from
modem to terminal.
4 RTS Request To Send. Input to modem from terminal when required to transmit a
message. With RTS off, the modem carrier remains off. When RTS is turned
on, the modem immediately turns on the carrier.
5 CTS Clear To Send. Output from modem to terminal to indicate that message
transmission can begin. When a modem is used, CTS follows the off-to-on
transition of RTS after a time delay.
6 DSR Data Set Ready. Output from modem to terminal to indicate that the modem
is ready to send or receive data.
7 SG Signal Ground. Common return line for all signals at the modem interface.
8 DCD Data Carrier Detect. Output from modem to terminal to indicate that a valid
carrier is being received.
9-14 Not used.
15 TxC Transmit Clock (DCE). Output from modem to terminal; clocks data from
the terminal to the modem.
16 Not used.
17 RxC Receive Clock. Output from terminal to modem; clocks input data from the
terminal to the modem.
18, 19 Not used.
20 DTR Data Terminal Ready. Input to modem from terminal; indicates that the
terminal is ready to send or receive data.
