Emerson Process Management ControlWave EFM 3808 - Manual (Page 69)

CI-ControlWave EFM Installation & Operation / 2-17
Up to three communication ports are contained on the ControlWave EFM CPU Module
and are designated as follows:
CPU Module:
COM1 - Port 1: CPU Bd. J3, PC/AT 9-Pin Male D-Sub - RS-232 - connected to Local Port
COM2 - Port 2: CPU Bd. J4, PC/AT 9-Pin Male D-Sub - RS-232 - supports External Radio
COM3 - Port 3: CPU Bd. J5, PC/AT 9-Pin Male D-Sub - RS-485 - Configured by SW3
The ControlWave EFM can support up to two optional Expansion Communications
Modules, which can reside in slots 3 and 4 (ONLY), in lieu of I/O Modules. Each Expansion
Communications Module contains two serial communications ports (one RS-232 and one
RS-485), and may contain an optional built-in spread spectrum modem (radio) and/or an
optional built-in 56KB PL/PSTN modem that are designated as follows:
Expansion Communications Module:
COM4, COM5, COM6 & COM7 on first ECOM Bd., assigned to Base Chassis Slot #3
COM8, COM9, COM10 and COM11 on second ECOM Bd., assigned to Base Chassis Slot #4
COM4/8 - Port 1: ECOM Bd. J1, PC/AT 9-Pin Male D-Sub - Both RS-232
COM5/9 - Port 2: ECOM Bd. J2, PC/AT 9-Pin Male D-Sub - Both RS-485 - Configured by
SW1 on ECOM Board
COM6/10 - Port 3: ECOM Bd. Piggy-back Radio Module (FreeWave or MDS TransNet
Spread Spectrum Modem) Antenna connector provided
COM7/11 - Port 4: ECOM Bd. Piggy-back Modem Module (MultiTech 56KB PL/PSTN
Modem) RJ-11 connector provided
Note: These RS-485 Ports are optionally available with 500Vdc isolation.
COM1 is also available as the Local Port. This accomplished by either a 9-pin D-Type male
connector or a circular 3-pin female connector. The Local Port is situated on the bottom of
the instrument.
Communication Ports COM1, COM2, COM3, COM4, COM5, COM8 and COM9 support
serial asynchronous operation. Communication Ports COM1, COM2, COM4 and COM5
support RS-232 while COM3, COM5 and COM9 support RS-485 operation. Com-munication
Ports COM4/8, COM5/9, COM6/10 and COM7/11 reside on optional Expansion
Communications Modules (ECOM1/2). ECOM1 must reside in Base Chassis Backplane Slot
#3 while ECOM2 must reside in Base Chassis Backplane Slot #4. ECOM Modules have one
RS-232 Port and one RS-485 Port. Additionally, an ECOM Module may optionally contain a
56Kbaud PSTN Modem and/or a Spread Spectrum Modem (Radio). Any non-Ethernet
communication ports can be configured for local communications, i.e., connected to a PC
loaded with ControlWave Designer and OpenBSI software.
The connections for the 9-pin, RS-232/485 interface are shown in Figure 2-11, while the
corresponding pin labels are provided in Table 2-4A.
2.3.3.3 RS-232 & RS-485 Interfaces
ControlWave EFM RS-232 & RS-485 communications connectors are summarized below:
CPU Module:
COM1 - Port 1: CPU Bd. J3, PC/AT 9-Pin Male D-Sub - RS-232
COM2 - Port 2: CPU Bd. J4, PC/AT 9-Pin Male D-Sub - RS-232
COM3 - Port 3: CPU Bd. J5, PC/AT 9-Pin Male D-Sub - RS-485