WOODWARD 5501-471控制調節器，5501-471使用教程
端口B（通過J10處的模塊）連接到標有MVME162前面板上的串行端口2。端口B也路由到DB9（onMVME712x）或MVME712M上的DB25連接器串聯轉換模塊。在那里標識為端口4。雖然兩個端口都連接到同一個Z85230端口B，但有幾個要記住的注意事項：? 在MVME162前面板上，端口2可以連接到TxC和RxCDB25連接器上可能存在的時鐘信號。
WOODWARD 5501-471控制調節器這些通過MVME162板上的收割臺J12進行連接（見圖第2章中的2-3、2-4和2-5）。TxC和RxC時鐘線也是MVME712M過渡模塊的端口4可用。? 在MVME712x轉換模塊上，端口4作為EIA-232-D硬接線DB9 DTE串行端口。使用“零調制解調器”電纜作為DCE是必要的港口城市? 在MVME712M轉換模塊上，端口4可以配置為DTE或DCE EIA-232-D串行端口通過上的跳線頭J19和J18MVME712M。端口4也可以連接到TxC和RxC時鐘DB25連接器上可能存在的信號。這些連接通過MVME712M上的收割臺J15制作（見圖2-3，第3-6頁第2章）。? 當端口B配置為EIA-530接口時，EIA-530數據傳輸通常通過MVME162前面板上的串行端口2發生。這個MVME712系列轉換模塊應與MVME162。雖然P2處存在信號（見圖2-5），但EIA-530標準要求使用DB25連接器和平衡（非單端）線路；P2適配器和MVME712系列轉換不支持這些功能模塊。希望在P2使用EIA-530信號的系統集成商必須提供適當的連接。第2章中的圖2-3（第3-6頁）、圖2-4（第3-4頁）和圖2-5說明端口B的工廠配置。請注意不建議將圖2-3第5頁和第6頁中所示的配置用于由于時鐘方向不正確而導致的同步應用。不要將串行數據設備連接到上的等效端口MVME712系列轉換模塊和MVME162同時安裝前面板。這可能導致沖突數據的同時傳輸。不要將外圍設備連接到端口1、端口3或MVME712系列轉換上的Centronics打印機端口單元在EIA-232-D情況下，這些端口均未連接到任何MVME162電路。在EIA-530案例中，試圖使用這些端口會產生某些連接，可能會損壞MVME162或外圍設備。
Port B is routed (via the module at J10) to the 25-pin DB25 connector marked
SERIAL PORT 2 on the MVME162 front panel. Port B is also routed to a DB9 (on
the MVME712x) or DB25 (on the MVME712M) connector on the MVME712
series transition module. It is identified there as Port 4.
Although both ports are connected to the same Z85230 Port B, there are several
considerations to keep in mind:
? On the MVME162 front panel, Port 2 can be connected to the TxC and RxC
clock signals which may be present on the DB25 connector. These
connections are made via header J12 on the MVME162 board (see Figures
2-3, 2-4, and 2-5 in Chapter 2). The TxC and RxC clock lines are also
available at Port 4 on MVME712M transition modules.
? On MVME712x transition modules, Port 4 is hard-wired as an EIA-232-D
DB9 DTE serial port. A ‘‘null modem’’ cable is necessary to use it as a DCE
port.
? On MVME712M transition modules, Port 4 can be configured as either a
DTE or DCE EIA-232-D serial port via jumper headers J19 and J18 on the
MVME712M. Port 4 can also be connected to the TxC and RxC clock
signals which may be present on the DB25 connector. These connections
are made via header J15 on the MVME712M (see Figure 2-3, sheets 3-6 in
Chapter 2).
? When Port B is configured as an EIA-530 interface, EIA-530 data transfers
normally occur through serial port 2 on the MVME162 front panel. The
MVME712 series transition module should be disconnected from the
MVME162.
Although the signals are present at P2 (see Figure 2-5), the EIA-530
standard calls for a DB25 connector and balanced (not single-ended) lines;
these are not supported by the P2 adapter and MVME712 series transition
modules. System integrators who wish to use the EIA-530 signals at P2
must provide the appropriate connections.
Figure 2-3 (sheets 3-6), Figure 2-4 (sheets 3-4), and Figure 2-5 in Chapter 2
illustrate the factory configurations available for Port B. Note that the port
configurations shown in Figure 2-3, sheets 5 and 6 are not recommended for
synchronous applications because of the incorrect clock direction.Do not connect serial data devices to the equivalent ports on
the MVME712 series transition module and the MVME162
front panel at the same time. This could result in simultaneous transmission of conflicting data.
Do not connect peripheral devices to Port 1, Port 3, or the
Centronics printer port on the MVME712 series transition
module. In the EIA-232-D case, none of these ports are connected to any MVME162 circuits. In the EIA-530 case,
attempting to use these ports would produce certain connections with the potential to damage the MVME162 or the
peripherals.
