过 SONET/SDH 和 / 或多路复用器系统，RS422 接口可用于 单通道 或 双通道情况。当用于单通道情况时， RS422 接口采用 Tx、Rx、和发送定时的典型方式与更高阶系统连接。然而，当作为双通道应用时，由于两个 RS422 通道采用一个时钟输入，因此必须遵循某些标准。如果按照以下方式连接，同时数据模块具有终端对时的特性，系统将运行正确。
LABOD 34 GN 1 DZ 220/160-24-4Q krf TYRISTOR DRIVE, REPA
ALLEN BRADLEY 151131 BASE DRIVER POWER SUPPLY, NIB
FORCE CONTROL MB-210-S0451U5 POSISTOP MOTOR BRAKE
ALLEN BRADLEY 1326-CPAB-50, SHIELDED MOTOR POWER CABLE,
STI MS4348B-2 48″ LIGHT CURTAIN RECEIVER
EATON CUTLER-HAMMER DH362FDK SERIES B 600 VAC HEAVY DUT
INDRAMAT AC SERVO POWER SUPPLY KDV 1.3-100-220/300-115
ALLEN BRADLEY 45PVA-1LEB2-F4 RECEIVER, NIB
VIDMAR STORAGE UNIT 28″ 30″ X 56″ CABINET
CONTINENTAL HYDRAULICS ED05M-3A1C-GD-24L-B PROPORTIONAL
NOSHOK 25-200, PRESSURE GAUGE, 1/4″ NPT, 0 TO 60 INCHES
ALLEN BRADLEY 10HP VARIABLE FREQUENCY AC DRIVE 1336S-BR
ALLEN BRADLEY 10HP VARIABLE FREQUENCY AC DRIVE 1336S-BR
STEARNS, 1 056 031 00 QF, MANUAL ADJUST BRAKE, 460 V, 6
ALLEN BRADLEY 10HP VARIABLE FREQUENCY AC DRIVE 1336S-BR
SICK FGSS-600-11 / FGSE-600-11 PHOTOELECTRIC LIGHT CURT
INVECTA B-955/6 ELECTRICAL BASE MOUNTED VIBRATOR
