Westermo U200 Installation guide - Manual (Page 32)

V4.2
www.westermo.com
U/R/T200 series
- 32 -
Table 1 in chapter 5.1 shows the pin-out of the T200 serial interface connector. Only the
RS422 transmit pairs shall be used if the switch is enabled for SNTP client/PTP Slave/serial
time server support. This means pin 1 (RS422 TX+) and pin 11 (RS422 TX-).
These pins shall be connected to the corresponding receive pairs (RX+ and RX-) on the serial
devices enabled for time client support. Several serial devices (up to 32) can be connected
on the same serial interface according to the RS422 standard.
The RS422 serial interface has the following configuration:
• Baudrate:
9600
• Data
bit: 8
• Stop
bit 1
• Parity
No
Or:
• Baudrate:
4800
• Data
bit: 8
• Stop
bit 1
• Parity
No
The serial RS422 baud rate (9600 or 4800) can be set in SNMP:
• serialConfig (OID: 1.3.6.1.4.1.16177.1.1.5.24)
The connector type for the T200 switch is the same as for the GPS receiver:
15-pol high density D-sub type connector, female part on the switch and male part on cable
assembly. Connector and shell are delivered together with the switch.
When using long cables (longer than 50 to 100m) a termination resistor (120 Ohm) shall be
mounted in the connector between the positive and negative conductor of each RS422 pair
on the last serial device (time client).
5.6 IRIG-B
An optical IRIG-B output signal is generated on the ST 850nm fiber transmitter on the T200
front panel if the switch is enabled for time synchronization. See the Operator Manual for
details about the IRIG-B protocol.
5.7 Output signals on GPS interface
Two copper output signals can be generated on the GPS interface (15 pin connector) on the
front panel of the T200 if the switch is enabled for SNTP server, SNTP client or IEEE1588
Grand master.
Configuration of these two signals, OUT 1 and OUT 2, is done via SNMP. The following
parameters in the timesync group of the private MIB of Westermo can be set:
- tsOut1Config[low, IRIG-B, PPX, high, xKHz], OID: 1.3.6.1.4.1.16177.1.1.5.16.
- tsOut2Config [low, IRIG-B, PPX, high, xKHz], OID: 1.3.6.1.4.1.16177.1.1.5.17.
- ppxDuration
[10us, 20us, 30us, 40us, 50us, 60us, 70us, 80us, 90us, 100us, 1ms, 10ms, 100ms],
OID: 1.3.6.1.4.1.16177.1.1.5.18.
- ppxOut1Interval [1, 5, 10, 60, 3600] seconds, OID: 1.3.6.1.4.1.16177.1.1.5.19.
- ppxOut2Interval [1, 5, 10, 60, 3600] seconds, OID: 1.3.6.1.4.1.16177.1.1.5.20
- outFrequency [1000 .. 50.000] Hz, OID: 1.3.6.1.4.1.16177.1.1.5.25