Velocity Edge DualX Service Manual download pdf (Page 102)

76 Communication settings

Section 3: Installation Reference, Installation, and Operations Manual

August 2014 3-9000-743 Rev U

Port B Driver Configuration

The serial communication Port B driver is configured via CPU Board switch banks S4, S5, and S7

and Field Connection Board switch bank S1.

Port B supports a special override mode which forces the port to use known communication

values (19200 baud, address 32). (Note that the protocol is auto-detected.) This mode is

expected to be used during meter commissioning (to establish initial communication) and in

the event that the user cannot communicate with the meter (possibly due to an inadvertent

communication configuration change).

The Port B communication override mode is entered by switching CPU Board S2-1 (switch

bank 2, position 1) from the OPEN position to the CLOSED position. Port B remains in the

override mode until either (1) the port configuration is changed (via software), (2) two minutes

has elapsed (at which time the port reverts to its current configuration), or (3) the S2-1 switch is

changed back to the OPEN position.

To configure Port B for RS-232 operation, set the switches as indicated in the table below (see

Figure 3-24 for switch bank locations):

Table 3-28 Port B RS-232 driver settings

Board Switch Position

CPU S4-1 RS232

S4-2 RS232

S5-2 FULL

S7-1 RS232

S7-2 RS232

Field Connection S1-5 TERM OFF

S1-6 TERM 0FF

S1-7 FULL DUPLX

S1-8 FULL DUPLX

It is the action of changing S2-1 from the OPEN to CLOSED position (not being in the CLOSED

position) that causes the override mode to be entered.

1 2 ... 97 98 99 100 101 102 103 104 105 106 107 ... 399 400

No comments

Velocity Edge DualX Service Manual Page 102