--- b/comms/Makefile	
+++ b/comms/Makefile	
@@ -140,6 +140,7 @@ 
     SUBDIR += py-hidapi
     SUBDIR += py-libimobiledevice
     SUBDIR += py-lirc
+    SUBDIR += py-pymodbus
     SUBDIR += py-pyserial
     SUBDIR += py-qt5-sensors
     SUBDIR += py-qt5-serialport
--- /dev/null	
+++ b/comms/py-pymodbus/Makefile	
@@ -0,0 +1,39 @@ 
+# $FreeBSD$
+
+PORTNAME=	pymodbus
+DISTVERSIONPREFIX=	v
+DISTVERSION=	2.5.1
+CATEGORIES=	comms
+PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
+
+MAINTAINER=	chris@chrullrich.net
+COMMENT=	Implementation of the Modbus protocol
+
+LICENSE=	BSD3CLAUSE
+LICENSE_FILE=	${WRKSRC}/LICENSE
+
+DIRECT_DEPENDS=	${PYTHON_PKGNAMEPREFIX}pyserial>0:comms/py-pyserial@${PY_FLAVOR} \
+		${PYTHON_PKGNAMEPREFIX}six>0:devel/py-six@${PY_FLAVOR}
+BUILD_DEPENDS=	${DIRECT_DEPENDS}
+RUN_DEPENDS=	${DIRECT_DEPENDS}
+
+USES=		python:3.6+
+USE_PYTHON=	distutils autoplist pythonprefix
+USE_GITHUB=	yes
+GH_ACCOUNT=	riptideio
+
+OPTIONS_DEFINE=	REPL TORNADO TWISTED
+REPL_DESC=	Interactive REPL console
+TORNADO_DESC=	Support asynchronous client using Tornado
+TWISTED_DESC=	Support asynchronous client/server using Twisted
+
+REPL_RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}click>0:devel/py-click@${PY_FLAVOR} \
+			${PYTHON_PKGNAMEPREFIX}prompt-toolkit>0:devel/py-prompt-toolkit@${PY_FLAVOR} \
+			${PYTHON_PKGNAMEPREFIX}pygments>0:textproc/py-pygments@${PY_FLAVOR}
+
+TWISTED_RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}twisted>0:devel/py-twisted@${PY_FLAVOR}
+TORNADO_RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}tornado>0:www/py-tornado@${PY_FLAVOR}
+
+NO_ARCH=	yes
+
+.include <bsd.port.mk>
--- /dev/null	
+++ b/comms/py-pymodbus/distinfo	
@@ -0,0 +1,3 @@ 
+TIMESTAMP = 1617259178
+SHA256 (riptideio-pymodbus-v2.5.1_GH0.tar.gz) = 7a3050fa3c2b5d77c8bb54b5ea89e274535c88a5f90ecc80dde95b26aef844bd
+SIZE (riptideio-pymodbus-v2.5.1_GH0.tar.gz) = 1134939
--- /dev/null	
+++ b/comms/py-pymodbus/pkg-descr	
@@ -0,0 +1,6 @@ 
+Pymodbus is a full Modbus protocol implementation using twisted for
+its asynchronous communications core. It can also be used without any
+third party dependencies (aside from pyserial) if a more lightweight
+project is needed.
+
+WWW: https://github.com/riptideio/pymodbus/