Johnson Controls 300 Series Manual page 15

Table 5: RS-232 Applications
Application
S2 Migration Applications
Gateway to JC/85
Applications
Network Port Applications
Operator Terminal
Applications
Network Terminal
Network Control Module 300 Series Technical Bulletin
Description
S2 communications are made via RS-232 Port 2 on the NCM to a TableTop
Modem (TTM). The TTM then interfaces with the JC/85 trunk.
The S2 parameters are identical to those of the JC/85 trunks.
The S2 Migration NCM does not accept a second local bus, either through the
other RS-232 port or via the integrated N2 Bus.
The RS-232 connection on the JC/85 headend connects directly into the
RS-232 Port 2 on the Gateway NCM.
The Metasys software objects on Gateway are connected from throughout the
Metasys network via the N1 LAN in the identical manner of a Standard
Functionality NCM.
The Gateway NCM does not accept a second local bus, either through the
other RS-232 port or via the integrated N2 Bus.
Network Port communications are made via RS-232 Port 2 on the NCM. Refer
to the Network Port Technical Bulletin (LIT-6295050).
When using the Operator Terminal program set, the VT100 (or PC with VT100
emulation software) connects to the NCM through either Port 2, 3, 4, or
through Port 5 or Port 6 (ISA Slots 1 or 2).
Port 2 direct or dial-up connection via an RS-232 (Figure 1:
Callout 7)
Port 3 direct or dial-up connection (Figure 1: Callout 8) (Dial-up
connection is not recommended here because you lose the
unconfigured laptop connection.)
Port 4 direct connection via an RS-232 (Figure 1: Callout 9) or using
an RJ-12 connection (Figure 1: Callout 10)
ISA direct or dial-up connection (Figure 1: Callout 4 or 5)
Slots 1 and 2
Note:
defined, it cannot be used for ARCNET card or Ethernet.
When connecting an Operator Terminal, you do not need to use the Network
Terminal. An Operator Terminal provides a higher level of capability than the
Network Terminal, allowing you to read and write to each attribute of a Control
System object, as well as define and build databases for the Trend and
Totalization features. Refer to the Operator Terminal Technical Bulletin
(LIT-636015).
The Network Terminal, which provides local operator I/O, connects to the
RJ-12 connector (Figure 1: Callout 10) portion of Port 4.
The Network Terminal Emulator connects to the 9-pin RS-232 connector
(Figure 1: Callout 9) portion of Port 4.
Transparent Modem
You can connect a modem to any port on which a direct connection
can be made. Set the baud to the modem one step higher than the
modem communication. For example, if the modem baud is 28,800,
set the baud to 38,400. The higher setting gives extra time for the data
to be compressed when it arrives at the modem before it is transferred
over the telephone lines.
Port 5 is COM1 and Port 6 is COM2. If Port 5 is
15